I sold an item and posted via royal mail.
Unfortunately by mistake I used a previous QR code and the parcel went to the address I'd sold an item to the previous week.
I only found out when I tracked the delivery and saw the photo of the parcel left in a safe place behind a wheelie bin at the wrong address.
I contacted both parties, the buyer hasn't replied and the wrong recipient says that the parcel was not being his wheelie bin and must have been stolen..
Where do I go from here