I paid for an ebay item via paypal. When it arrived it wasn't as described, so I asked to send back for a refund. Seller said OK and gave their address. I've got it ready to post, but now seller is saying I cancelled the payment and it's not in their account! I didn't though - it's still showing as completed in my paypal. So I don't have the money - and they are saying they don't either?! Has anyone else had this?