I received a letter in the mail from Capital Mangement Services L.P. I called and asked them what it was about because I wasn't familiar with the amount they were asking for. I sincerely have/had no clue what they were talking about. I dial the number and the woman says "Hello?" as if she's not working from an office. She asks for my social security number. I say you should have it already and I'm not comfortable giving that to you. She then says, "Give me the account number." I began to read a number on the paper. She stopped me, "No, that's not it. Give me the account number." I tell her that's all I see on there. She says, "How many times do I have to tell you to give me your account number?!" I tell her, "There's no need to be smart about it, " or something to the effect. She then goes off on me. I don't tolerate it, I tell her she sent me a letter and I have no clue who she is. I ask for her name. She says she can't tell me that. I ask for the company's name. She can't tell me that either. I then tell her I think she's a scammer because she was acting like one. She eventually calls me a "*** douche" and hangs up on me. That's a real nice way to try to collect on a debt they claim I owe. They can crawl back under their rocks as far as I'm concerned.