I was near save a lot store and just parked and was going out of my car when I saw someone slandering me saying that I scratched the front of their car while parking and I am 100% sure that this didn't happen cos I didn't do it. I told them that but they were saying no and tried to be rude which really aroused my anger too because they were lying. Then, they drove their car and took a picture of my cars' door only, I mean I don't think they took a picture of my license plate cos I was looking at them. So, what can I do now or what can they do?