Did the police officer look at your car, if not I sugest you take it to the police station, ask to see that officer if possible, find out how much damage was done to the other car because she /he would have a record of the damage done to the other car, then get them to look at your car and take note of the no damage, then ask if that amount of damage was done to the other car there would be more damage done to mine wouldent there and see what there answer is. because of the sound of what you have said there being quite a bit of damage to the other car there must be some sort of damage to yours, surely anybody with a little bit of common sense would recocnise
this. Hopefully!