That really stinks. I'm with GP2. Just have a copy of that police report (did he get a ticket at all?) and make the phone calls asap to his ins. co. and if they won't give you any answers tell them you're going to talk to your lawyer, and go to your own ins. co.

It s not you and your car getting off to a bad start! Don't let that get you down. There are jerks everywhere.
Good luck and keep us posted!