I think they are a fraudulent people, claiming they're calling on behalf of banks i.e. Citibank. The caller says they had my last four (SSN) and asked me to provide them complete digits... real shady... worst part the caller says he was a US Marine doing his duty... I think this is a front (Al-Qaeda perhaps) and this caller is a predator. Be careful.

I called Citibank and they assured me my credit history was impeccable.

They called me and told me that i owed them money.  But they didnt know what creditor and wanted me to tell them my SSN and address. What a Joke.

I got through to a person named Amanda Mayes - she wanted to know who my husband worked for but would not give me any info as to why they were calling.  I actually called them back and it took 3 tries to get through.  She also gave me a toll-free number, 866-625-8973.  Not sure what they wanted, though.

Received a call from them today on my LAN line.  No one on other end.  Blocked call with *60.  Filing complaint with DNC and FCC.