Got a message saying my name and social are involved in internet fraudulent activity...never said my name and wanted me to call..... I think its a scam

I received a call from this number using my name and part of my social security number. The purpose of the call seemed to be intimidation and to make me think I am associated with some court case. I have no knowledge of this case GMM3966 and refuse to be intimidated.

Evan Scott- probably an alias...called my mother-in-law looking for my ex-husband. I called the number back and chewed the guy out for calling her as she doesn't even know him. He said they have lawyers in the office and an ex-police officer and they can do whatever they want.
The message said it was for a bad check, but when I called, he said it was identity theft. He didn't intimidate me, we had a good argument. The guy is a jerk. He knew he didn't scare me.

Called me today about something from 2008. Said that it was a bad check. Fees are 1300 and they will settle for 375.00 they won't send me documents

Called my ex mother in laws house with allegations that I am being accused of check fraud.  The man said his name was Nick Johnson.. Also gave an extension: 7318