I think it is a scam.
A few years back, I went to one of my grandkids' soccer game. I parked my car with an open space on one side, and when I got back to the car at the end of the game, there were two men standing by my car, and their car was in the spot beside mine. There was a big scrape on the side of their car and some damage. I also had a scrape on the side of my car, at about the same height.
They both started yelling at me that I had damaged their car, and they were calling the cops, etc. I was totally calm because I knew I had done the damage to my car on a post in an underground parking lot a few weeks earlier. They were really getting in my face and telling me I'd better give them some money now because once they got the police there it would cost me so much more. The thing was, the lawyer from the place where I worked at the time was with me when I did the damage, and his legal assistant also saw it happen (she was standing nearby waiting for us). Plus all my family had seen it. So I wasn't the least bit worried, and I said "yeah, go ahead, call the police, whatever," and got in the car and drove home. Never heard from anyone again.