Matthew Keller called my ex-wife from 312-265-4816 and told her that there was a "civil claim" filed against me, and would sue me. Gave a claim# and all...
I also got a call from "Matthew Keller" who had a partial SSN but a couple numbers didn't match. He admitted that he didn't even know if I was the right person based on my name, but was trying to get me to give up that info.
I told him he had the wrong person.
I checked out there website and called them, trying to get their street address. I told them I needed to fedex them some info showing that I didn't owe the money they're claiming. The woman on the phone said "Bring it to court." and hung up on me. Obviously anyone who was seriously pursuing a court case wouldn't behave like that. These people are definitely a collection agency but are not actually doing any court filings or else I'm sure they would want any information I offered to send them via fedex.
I just filed my complaint with the FTC against them as well, and I encourage others who receive these abusive phone calls to do the same:
http://www.ftc.gov/phonefraud