They keep calling my house threatening me telling me that they're going to make me pay for this MasterCard that I had back in 2003 which I did not have they won't leave me alone what can I do

I just got a threatening call from this number. I dont know who they are or what they want. I held on the line to talk to someone and after 6 minutes I was hung up on. Does anyone know who they are?

Shut up and quit nagging.  Pay your damned bills.