Lolol @ telling them off! Next time try threatening to take legal action if they call again. That usually stops the calls, since they know fair debt collection laws permit suing collection agencies who make harassing phone calls.
Has to be scam.... wanted me to pay for $400 on a walmart card I have in my name. I know I don't have something like this so before giving them credit card payment they were asking for, I asked for details of the purchases... they then asked if ____ was the last four digits of my social.... of course it wasnt.... then they said they must have the wrong person.
Scam for sure.