Keeps calling its a scam artist

I know I owe debt but I don't know who is real anymore so I will just wait till papers are filed I guess. This number just called and said they were an investigator on complaint files against me. Before it was a foreign guy saying he was attorney Ron Adams and he was at my house to serve me papers.
I was at my house and no one was around.

I just got a call from the same number stating the same thing.  Did you ever get served papers?