damn Kevin, this is getting me pissed off too, and I'm not even involved!
just the fact that some punk kid would do this to you is sickening. I don't think I'll be buying anything even halfway expensive from classifieds or Ebay from now on (unless the seller has an EXCELLENT rating)
This guy probably doesn't even have the door panels, just give him a call and tell him to send your money back or you WILL get it back yourself.
I'd head out there with you, but I've got finals coming up soon.
good luck man