I am a member of the Amazon shopper panel which lets you submit receipts for return of 10p per receipt which accumulates over a month and you get Amazon credit, over recent months all my receipts are rejected and I have constantly asking for review upon which they are accepted, my issue is they have no support for this from the shopper panel app you get referred to main Amazon customer service and they are clueless what really bugs me is that they have no customer complaint department that you can contact.