I was in a grocery parking lot and had a verbal altercation w/a guy. He went into the store, I got in my truck to leave. As I was backing out, he turned around, was ranting at me. I stopped, he came around looked at my license plate, said I keyed his car and called the police. He did have scratch marks on his car door, but I didn't do it. I waited w/him for the police to come. They asked him if he saw me do it and he said no, but was sure I had, which I did not. They said a report would be filed. Now what???