I listed a used dvd for auction and in the description described it very accurately as used and that payment must be made within 3 days. The dvd sold last Friday (2nd Nov). After 6 days of no communication or payment from the highest bidder I sent him an invoice. Still no communication, so tonight (7 days after the auction ending) I opened an unpaid item case because I want my fvf back.  Just now, I get a message from him saying "Sorry but I will not be purchasing this item. As it is a used copy and there is no refunds." What should I do?