Blizzard does this to prevent money laundering outside of country boundaries. That's why they 0 it out.
Honestly, you should keep an updated address if you want to utilize services. I update my address when I've moved at everything I care about
Post Office (mail forwarding)
Cell Phone company
...now just add Blizzard to that list.
Also, the region change may result in you not being able to utilize the US-based AH. This is also to prevent scammers.
I'm glad they have these policies and audits. Sorry to say, but you should have taken more care, OP.
Money laundering? They have a 250 dollar limit anyways, what kind of failed money laundering operation would use such a restrictive method that leaves behind so many trails it be so easy to track????
There is no excuse but poor customer service for what the op is experiencing. If blizzard is going to offer such a service as a blizzard account , then they should at the very least be willing to deal with any issues involving a user who might play from several different regions. It is entirely unreasonable considering how restrictive this service already is for them to demand their users to stay stationary if they want to continue using their products.
Threats of violence. We take these seriously and will alert the proper authorities.
Posts containing personal information about other players. This includes physical addresses, e-mail addresses, phone numbers, and inappropriate photos and/or videos.
Harassing or discriminatory language. This will not be tolerated.