If 18005694879 recently appeared on your phone, you may be wondering who is behind the call and whether you should call back.
The number is also written as 1-800-569-4879 or (800) 569-4879. It is a toll-free US number.
There is a legitimate connection behind this number. The Los Angeles Department of Water and Power (LADWP) lists Transworld Systems Inc. (TSI) at (800) 569-4879 as one of its authorized collection agencies. LADWP says these agencies may contact customers about unpaid balances on inactive accounts.
But that does not mean every call displaying this number should automatically be trusted.
There are also public complaints about calls from the number, including one person who said the caller claimed they owed more than $200 in toll fees. Another caller-reporting database has categorized the number as financial services and debt collection.
So, if you received a call from 18005694879, verify the claim before giving the caller any personal information or making a payment.
Table of Contents
Who Is Calling From 18005694879?

The number 18005694879 is associated with Transworld Systems Inc. (TSI).
LADWP’s official collection-agency page lists TSI among the agencies it authorizes to contact customers about unpaid LADWP balances. The number shown for TSI on that page is (800) 569-4879.
This is an important detail because many websites simply label unfamiliar numbers as “scam” without checking whether the number has a legitimate business connection.
In this case, there is a documented connection to a real collection agency.
However, there is another side to the story.
LADWP itself warns customers that scammers may pretend to represent the department or one of its authorized collection agencies. The department advises customers to confirm the identity of a collection agency before sharing sensitive information.
That means the right question isn’t simply “Is 18005694879 a scam?”
A better question is:
“Why am I being contacted, and can I independently verify the claim?”
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Is 18005694879 a Legitimate Number?
Yes, the number has a legitimate public listing.
LADWP lists (800) 569-4879 for Transworld Systems Inc. as an authorized collection agency number.
That establishes that the number is associated with a real collection agency.
It does not, however, prove that every call showing this number is genuine.
Caller ID can be manipulated. A person can receive a call that appears to come from a legitimate business number even when the caller is not actually connected to that organization.
For this reason, don’t use caller ID as your only method of verification.
If the caller claims that you owe money, ask for enough information to identify the account and then verify it independently.
Is 18005694879 a Scam?
There is no solid basis for calling 18005694879 itself a scam number.
The number is officially published by LADWP for Transworld Systems Inc.
At the same time, there are complaints associated with the number.
One public report says the caller claimed the person owed more than $200 in toll fees. The person who received the call said the vehicle details supplied by the caller did not match their own vehicle and believed the call was fraudulent.
Another caller-reporting site shows two user classifications for the number: financial services and debt collector.
These reports are worth knowing about, but they are still user reports. They don’t prove that the organization behind the number is conducting a scam.
The safest conclusion is:
18005694879 has a legitimate connection to Transworld Systems, but you should still verify an unexpected debt or toll claim before paying or sharing sensitive information.
Why Would Transworld Systems Call You?
Collection agencies generally contact people when an account has been referred to them for collection.
In the case of LADWP, the department says an inactive account with an outstanding balance may be referred to a licensed and authorized collection agency after billing notices and outreach have been made.
A call could therefore relate to:
- An unpaid utility balance
- A closed account
- A collection matter
- A disputed balance
- A debt that you don’t recognize
- An account that may have been associated with the wrong person
Don’t assume that receiving the call means the debt is valid.
If you don’t recognize the account, ask questions before discussing payment.
Why Are People Reporting Toll-Related Calls?
This is where things become less straightforward.
A caller report published for 800-569-4879 describes a person who was told they owed more than $200 in toll fees. According to that report, the caller supplied a vehicle plate number that the recipient said belonged to a vehicle they had never driven.
That is an allegation from an individual user, not an official finding.
Still, it highlights a useful warning: don’t accept a toll debt simply because someone gives you a case number, plate number, vehicle description, or payment deadline over the phone.
If the caller says the debt came from a toll road, find the relevant toll authority yourself and check whether the alleged charge exists.
Don’t use a website or phone number supplied by an unexpected caller as your only source of verification.
How to Verify a Call From 18005694879
If you received a call and aren’t sure whether it was genuine, take a few minutes to check it.
1. Don’t give information immediately
You don’t need to provide your Social Security number, bank details, card number, passwords, or other sensitive information just because someone called you.
Ask what the call is about first.
2. Ask for the company name
If the caller says they are from Transworld Systems, ask them to clearly identify the company.
You can also ask for an account or reference number.
3. Find the original creditor
Ask what company or organization supposedly sent the account to the collection agency.
For example, if they say the debt is related to a utility account, check the utility provider’s official website independently.
4. Verify through an official source
If the caller claims to represent LADWP, don’t rely solely on information given during the call.
LADWP publishes its authorized collection agencies and contact information on its website. It also provides its customer contact center number for additional assistance.
5. Check your own records
Look at old bills, emails, account statements and payment records.
You may discover that:
- You already paid the balance
- The account belongs to someone else
- The amount is incorrect
- The account was closed
- You don’t recognize the account at all
6. Don’t let the caller rush you
Pressure is a reason to slow down, not a reason to pay faster.
If someone tells you that you must make an immediate payment or something terrible will happen, verify the claim independently before doing anything.
What If You Don’t Owe the Debt?
If you don’t recognize the debt, don’t simply accept the claim.
Ask the collection agency for information about the account and compare it with your own records.
If the alleged debt is connected to a company you have never dealt with, contact that company through its official website.
You should also keep records of the communication, including:
- Date and time of the call
- Number displayed
- Name of the caller
- Company name
- Reference or account number
- Amount claimed
- Reason given for the debt
Written records can become useful if you later need to dispute the claim.
What If the Caller Threatens You?
Be especially cautious if the caller:
- Demands payment immediately
- Threatens arrest
- Demands gift cards
- Requests cryptocurrency
- Wants payment through an unfamiliar payment app
- Requests your banking password
- Asks for an OTP
- Refuses to provide written information
- Tells you not to contact the original creditor
- Becomes aggressive when you ask questions
LADWP specifically warns customers about fraudulent contacts pretending to represent the department or an authorized collection agency. It also says it will never request payment through gift cards, wire transfers, Cash App, or peer-to-peer payment services.
If a caller asks for one of these payment methods while claiming to represent LADWP, stop and verify the claim.
Can Someone Spoof 18005694879?
Yes. Caller ID should not be treated as proof of identity.
A legitimate organization can have a genuine number publicly listed, while a scammer can attempt to make a call appear to come from that number.
That’s why the safest approach is to separate the number from the claim being made during the call.
Even if your phone shows 1-800-569-4879, you still need to establish:
- Who is calling?
- Why are they calling?
- What account are they referring to?
- Who originally issued the alleged debt?
- Can the information be confirmed independently?
What Do Online Reports Say About 18005694879?
Online reports are mixed.
One caller-reporting site gives the number a neutral rating and lists two user classifications: financial services and debt collector. One of the reports specifically describes it as a debt collector for tolls.
Another lookup site contains a complaint from a person who said the caller claimed they owed more than $200 in toll fees and provided vehicle information the person disputed. The site currently shows one spam report associated with the number.
These reports shouldn’t be treated as proof that the number is fraudulent.
More importantly, there is an official source showing that (800) 569-4879 is the number listed for Transworld Systems Inc. by LADWP.
So the evidence doesn’t support a simple “scam number” label.
Frequently Asked Questions
Who called me from 18005694879?
The number 18005694879, or 1-800-569-4879, is publicly listed by LADWP as the number for Transworld Systems Inc. (TSI), one of its authorized collection agencies.
Is 18005694879 Transworld Systems?
Yes. LADWP’s official collection-agency page lists Transworld Systems Inc. (TSI) with the phone number (800) 569-4879.
What is 1-800-569-4879 used for?
LADWP lists the number for Transworld Systems Inc., which can handle unpaid LADWP balances referred for collection.
Is 18005694879 a scam?
The number itself has a legitimate business listing, so it should not automatically be classified as a scam. However, public user reports include complaints about toll-related collection calls, and callers can spoof legitimate numbers.
Should I call 18005694879 back?
If you aren’t expecting the call, there’s no need to make a decision based solely on the caller ID. Verify the alleged debt through the original organization or an independently sourced contact number first.
What if I don’t recognize the debt?
Ask for information about the alleged account, check your own records, and contact the original creditor independently. Don’t provide sensitive information or make a payment until you’re satisfied that the debt is legitimate.
Can 18005694879 be spoofed?
Yes. A displayed caller ID does not by itself prove who placed the call. Independent verification is the safer approach.
Why is 18005694879 calling about toll fees?
There is at least one public user report describing a toll-related debt call from this number. That report is not enough to establish that toll collection is an official purpose of every call from the number.
Final Verdict
18005694879 is not simply an unidentified random number.
The number 1-800-569-4879 is officially listed by the Los Angeles Department of Water and Power for Transworld Systems Inc., an authorized collection agency that can handle certain unpaid LADWP balances.
At the same time, public reports show that people have received calls from the number involving alleged toll debts, including at least one disputed claim.
So if you received a call from 18005694879, don’t panic and don’t pay just because the caller knows your name or gives you a reference number.
Verify the debt first.
Check the original creditor, use contact details from its official website, review your own records, and avoid sharing sensitive information until you know exactly who you’re dealing with.
That approach protects you whether the call is a legitimate collection attempt, a mistake, or someone misusing a legitimate phone number.

