Sometimes I am staggered at what people do. We Always try and help customers where we can and our service record shows that but in over 7 years the worse case of buyer manipulation ever. Really not sure what to do so answers on a postcard.

A customer buys a personalised item of clothing and we ship tracked 48 as always within 24 hours. After we shipped the item the customer asks to change the size. We said we would assist the customer where possible to soften the blow of their mistake so contact us when they receive it. The item was delivered 4 days ago. This morning with no further messages and A-Z saying hasn't arrived and 10 minutes later an order in the size they wanted their order changed to. What would you suggest. Clearly I will appeal the A-Z but pointless I guess.