I sold a new, sealed desktop PC to a customer who claimed the PC doesn't work out of the box when connected to his monitor. In a spirit of good customer service, I offer a customer several options: (1) To contact HP to RMA, (2) I can call HP for him and (3) Just return for refund. On a side note, I sold around 20 of those PCs and had 0 complaings about them being DOA...
The customer seems bent on returning it, so I even before I OK'd the return he said he already shipped it back.
I receive the computer connect it and find it fully working. I offer to ship it back or refund minus restocking fee (as per return policy on my listing). Customer strongly believes that I should just accept his story without checking because: "You can not do that to me bro, I'm a customer. I don't want you to ship it back to me". So naturally after I refunded he opens the case.
What would be the right words to ebay seller support in this situation?