I had a set of Porsche wheels that I sold on eBay, different sizes, front and rear. One bidder asked if I would sell just the front pair, I declined. He bid on the full set, which I shipped him. Then I received a complaint that the rear pair never arrived. I refused refund and he complained to eBay. eBay sided with him and required a refund. Why do I suspect the pair of rears are behind his garage?