Dang man that sucks. Good thing is that the damage is minimal. If I were you Id get a new fender. The price to pull out the dent, bondo, primmer, paint, wet sand and buff ain't worth it when you can get one for the same as the repair. Looks likes you took it easy on him even when you went off on him. Just to save himself a few secounds of is life is going to cost him now. I would have still kept going off on him. English or no english. I would have made him feel like shyt and show him how mad I am. But it is what it is just get it fix quick. I still think it looks sick.
Also is there a way you can have him pay for that wheel. Probably say you just purchase those wheels, and get a fake receipt or something?