My girlfriend scratched someone's car on the front bumper, felt bad, so she left a note. Later the lady contacted her, and started getting quotes from repair shops for repainting the entire front bumper. For around $400, the scratch would be off her mind.

Maybe that's why they didn't leave a note...some people get greedy. It was a scratch...a small one too, nothing like the one you got. I've seen bigger scratches from road gravel.