My experience is similar since its with Amazon support and separate from AWS. My account, encompassing everything covered my Amazon credentials, was put on hold for "address verification" two weeks ago and handed to the "Accounts Team". This means, no buying anything on Amazon for the holidays and zero access to my AWS account, Lambdas, S3 buckets, etc. Just a mind-numbing cycle of phone trees and "we are looking into this".

I cannot even sign into my Washington Post subscription. Thanks, Bezos!