Sounds to me like he had them on his car and f'ed them up and then went to "his tire guy" and found out that they were screwed and is trying to pin it on you. How in the hell you would bend a center hub during shipment? I would say that is almost 100% impossible unless your method of shipping was to chain them to the back of a train and drag them to him. If they were insured, I would tell the guy to file a claim with the shipper and see what happens, but I personally wouldn't give him a dime.