520-521-3032

Text message saying they are from the mediation department and to call 833-883-2903.
They are not using my current name and have also sent messages to family members.

This appears to be a "Fake Process Server" scam.
There are no letters, papers or documents and no court cases are going to be filed.

The message they leave is intended to instill enough concern in the intended victim that they will return the call.  The scammers will claim that there is some outstanding "debt" that they are trying to collect on.  The claimed debt will usually be very old (beyond the Statute of Limitations) and a fairly sizeable sum.  They will offer to let their victim settle the debt for a fraction of that amount and avoid being sued in court if they pay then and there over the phone.  They will be very aggressive and try to browbeat and threaten the victim to make a payment.  They will refuse to give any details about the debt beyond generalizations and will also refuse to agree to send any documents supporting their claim, often claiming that they were already sent at some earlier time.

Relatives of the intended victim and even employers (present and past) may be called in an effort to embarrass the victim into calling the scammers to get the calls to stop.

The best course of action is to ignore the calls and not return the call.  If you have any doubts about being sued, call your local courthouse instead and have them check if anything has been filed against you, you will find the lack of results reassuring.
Remember that if you were really being sued, a real process server would not call you or a relative about papers needing to be delivered, they simply show up and serve the papers.
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(Information oft posted by regular poster BigA)
The fake process server/location finder extortion attempt usually consists of the following:

They mention that they have received a Fax document or some sort of complaint and that there is a pending legal matter or action about to filed against you to create the sense of urgency.  They tell you that they are a “process server” and cannot give you the particulars of the case since the file is sealed. This is simply ruse to get you to call another number (often with a made-up case number) where they will ask for money to “make it go away” (this is actually the same place, they work in teams, one pretending to be the server, and the other usually pretends to be a lawyer).  They threaten to serve you at home or at work.  They tell you that if they serve you at work then they will need a supervisor, security, or HR person there as a witness, hoping that will cause you to panic over the alleged embarrassment of being served at work.  They also tell you that you will need two forms of ID.  None of which is true.  Process servers do not ever call ahead so that you can dodge them.  Process servers get paid to serve papers, nothing else.  They certainly are not going to pass up a paycheck by telling you that you can avoid being served, they are not going to give you an extra day or even a few hours to get a “stop order”.  Court documents are time sensitive and must be served within a certain amount of time.  Remember that you can always call the local courthouse to see if there really is a lawsuit that has been filed against you.

It is incumbent upon them under the law to prove that the debt exists and that you owe it, and (this is the important part) that they have the legal right to collect it.  You are not obligated under the law to prove that you don’t owe or that it is paid.

Federal law (FDCPA) requires them to send you a letter (US MAIL ONLY) postmarked within 5 days of their first contact that contains their name, physical address, the creditor’s name, and the amount of the alleged debt. It also must contain a “mini-Miranda” telling you that it is an attempt to collect a debt and that all information will be used for those purposes.  The one other important thing that this letter must also have in it is that you have a right to dispute the debt within 30 days of receipt of the letter and if you do so, all collection activity must be stopped until the debt is verified.  If and when you get that letter you should immediately send that dispute/debt validation request letter by certified, return receipt mail.

First, you should make a complaint at this Federal Agency, and while there you should also read up on how debt collection is supposed to work as well as what your rights in this matter are: https://www.consumerfinance.gov/

Also file complaints with the FTC: https://reportfraud.ftc.gov/#/

Also file a complaint with your State Attorney General's office.
List of State AG’s offices:   https://800notes.com/faq/attorney-general