Recovering a Battle.net Account when the email address has been forgotten
Attempting to play Diablo III results in error 3007 or 316704
How to correct or update the first name on a Battle.net account
Troubleshooting steps for communication and transmission errors.
Customer Support may ask you for your PayPal billing agreement ID or your order invoice ID when assisting you with a refund
Blizzard servers could not be reached or may be offline.
How to play Blizzard games in offline mode
More information about authenticator security codes