Threatened with a lawsuit/charges after reselling a car

This happened YEARS ago, but I felt like posting about it after seeing a similar post.

I bought a cheap non-running car on Facebook. I was homeless at the time and thought I could get it running and have a way around and a place to stay. A guy offered me more money for it, so obviously I sold!

He transferred the title and everything, it was on the up.

A month later I get a message from the original seller demanding my phone number and address, stupidly I gave out my number. They said I had committed insurance fraud and they were pressing criminal charges and suing me for damages- what they were saying made no sense, apparently the guy I sold it to appeared on their insurance somehow??

I had no address, they kept blowing me up demanding it, saying they had to have SOME address for me to be served. I kept saying they were SOL, I was living in a truck (that ran, that I bought with the sale money, but I didn't tell them that part).

I blocked dozens of numbers, ultimately had to change my phone number, nothing came of it.