I just got the same call and they said I have a complaint against me. :-) Said to call back with a coded number they gave me. So I called back and used *67 to block my number and it was a recording but said it would connect at the next available representative but it hung up on me. So by that I am sure it is all a scam! Be careful.
Don't worry, this is just a scam. They threaten and tell you lies for money. Just ignore them. If you have a smartphone, and they are phoning that number, download Mr. Number. It works at blocking calls easily - at least on Android phones.
I've been getting these calls at home and on my cell also. I called them back. Transferred me back and forth to several different people saying they were arbitrators and senior proccessors. I told them I owe nothing and that I'm tired of the harrassment that my lawyer was involved. I would not pay a penny if they can't provide proof (which they say they don't have anything that it comes from their complaint client) which they are stating was some company called Paramount Funding and it was a payday loan that was not paid back (?). When I told them I was recording the conversation and turning it in, they hung up. I'm so done with this crud.