you have his name, plates and address...well at least his business one....you can still file a police report...this way you can get his insurace company involved. Tell them the truth...you were being nice and was willing to settle the claim without involving the insurance but the guy is unwilling to pay what a ligit body shop quoted to be the amount needed to repair the damages! The cops should be able to handle the rest... You should have taken all his info at the time of the accident though...like license and insurance info, home address and stuff...but see what the cops say!

Time is running out to file that report so since you tried to be nice..and it didn't work out....get that report!