I sold an item in Feb but after 3 failed attempts to deliver to the buyers house the item was returned to me(I didn't know until it turned up on my doorstep). Mid april the buyer contacted me to say did not receive item and i informed they had tried several times to deliver(with proof) and to raise with ebay, the buyer has now contacted me again today nearly another month later with a stroppy message saying ebay have said i need to refund. Now I know i have the item and can just resell and block buyer but whats your thoughts on this?