It sounds like the person wants to do the right thing. Often though when presented with a bill they are stunned and start thinking that you are trying to make money on them. I'd give them a written estimate with the name and number of the repair place. If they want to call to verify they can. Oh, and don't throw their note away. You may need it for small claims court. I hope you took pics of the damage. Can you tell I've watched Judge Judy?