sorry to hear about your issues. Usually when they deny they have a reason and sometimes they tell you what they need an maybe you didn't supply exactly what they needed? You can always start over and ask again.
A couple of the mods here have helped people in the past to know what hung up their request or can help them resubmit things correctly.
@Matt_AMD or @Ray_AMD may be able to help. I am sure they will need the a number that AMD gave you for the rma request if they gave you one.
If you don't wan't to post that here you can send them a private message.
Good Luck!