Blizzard or game account hacked or compromised.
Changing language settings for game and/or communications from Blizzard
How to remove or change the phone number on your Blizzard account
How to move a game account to a different Blizzard account
Information on how to change the registered Blizzard account holder name
How to resolve being unable to log in due to this error
How to correct an email mistake when creating or updating your Blizzard account
How to update your BattleTag.
Regaining access to a Blizzard Account when the email is not accessible.
Transfer Blizzard Balance between two separate Blizzard accounts.