I sold a phone on eBay on the 15th December. The lady paid for it on the 18th. I posted it on special delivery the next day. Today I have received an email from the lady saying that she has not received the phone. What is most unfortunate for me is that I have lost the royal mail receipt. So I guess there is no proof of me posting it (feeling very stupid about this). On the special delivery stickers there is the senders address so if it really did not reach the destination, wouldn't royal mail send the phone back to me? Is there anything I can do? is this a possible scam where she has received the item and is calling my bluff to get her money back also? Do i give the benefit of the doubt and just refund the money? If you were me, what would you do?