I just got a call from a collection agency saying I had an old debt from 2000 withsouthwestern bell. They were very rude and told me that I didn't pay my bills and that I was just buying time by wanting them to produce the bill showing what I owed. I was told no when I asked to speak to their supervisor and then they said they had been mailing me bills and I asked to what address and it was wrong. I told the guy that I would teel his supoervisor my mailing information when he called me. I do not think that I have any past due bills from 2000 but even if I did wouldn't it have come up before now? What is the best way to handle this. The collection agency is "Portfolio" I do not know if they are a reputable agency or not.

Ok, the fact they don't want to send you proof of debt is a big sign, also they are suppose to send you verification of the phone call.

So you needed to get their mailing address and mail them notice not to call you any longer but to do it all by mail.