discussion.RE returns

I have had a few returns that have not showed up and have been lost either by Royal Mail or Evri.

Customer has been refunded on first Scan. Returns label automatically gets generated by Amazon for Customer although I pay for the returns label.

I have tried to open a safety claim but it gets denied and Amazon say I should contact the carrier, Royal Mail and Evri will not handle the claim as they say Amazon is considered the sender and only they can claim .

How can I get compensation for these lost returns I am hitting a brick wall!