On XXXX XXXX, 2015 at XXXX, I received a phone call from a woman stating she was from Contract Caller 's, Inc at phone number XXXX. I asked her what the call was regarding and she kept insisting I verify my address and social before she gave me any info. I hung up on her and called the number back a few minutes later. The male that answered my call asked me if my name was XXXX and I said yes -- and asked him what these calls were in reference to and what type of business was it I was calling. He refused to answer my questions and kept pressuring me for personal information. I asked him several times what type of business it was that he worked and he was dismissive with me and refused to answer my question. Finally, he said it was " personal business ''. I repeatedly asked him what the call was in reference to and he just laughed at me and did n't provide the information I requested. I again hung up the phone after he refused to identify himself or the business he was working for. I found out that the number they were calling from is a debt collection agency and am filing a complaint for not identifying themselves, using threatening tones and language with me, and not identifying that they are in fact debt collectors trying to collect a debt that I do not owe.