Forums flooded with it in last few days. Happened to me.
"Product Level Diablo® III Collector’s Edition Account
Status Suspended
Region Global Diablo III
Auction House Banned "
Mines was the same CC i use for wow subscription, lots of wow tgc purchased in blizzard store, CC company blocked it for winning 10$ item but money went through anyways.. But then got email from blizzard.
"We are writing to let you know that we are aware of an issue affecting some players using the real-money auction house which has resulted in lingering pending credit- or debit-card charges for items that they bid on but did not ultimately win.
We have identified the holder of this Battle.net® account as one of the players affected by this issue, and we are currently in the process of working with the relevant payment providers to address it."
So they got my money, no item, and i get suspended, what a life eh. And day 3 on waiting on response from tickets since they said it cant be fixed over phone.