Did this clown offer to pay? Did you get his license number? He can't just hit your car, say something stupid to you and drive off. If that's the case report his sorry *** to the police and call your insurance company and report as a hit and run and give them whatever info you have about this guy.
There are "paintless dent repair" places like Dent Wizards etc. If you have trouble finding one call your local high end car dealer (Mercedes, Jag, Porsche) and see who they recommend. If its a dent and the paint isn't broken and its not on a seam or edge they can usually get it out. Don't know about the bumpers, that's a plastic cover. Good luck and let us know how you make out.

Pat