I would use the contact form immediately and ask what is going on. If they don't respond promptly, after the holiday, I would call as soon as you feasibly can. Right when the holiday is over I would reach out.
This is a community forum, so the best way to speak with AMD is to use direct lines like the contact form I linked. I hope you get some clarification as to what is going on with your RMA in a timely manner.
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