Blizzard or game account hacked or compromised.
Changing language settings for game and/or communications from Blizzard
How to move a game account to a different Blizzard account
You can change your BattleTag in Account Management.
How to consolidate multiple Blizzard accounts into a single account.
Steps on how to create a new Administrator Profile.
How to move a Hearthstone account off a Blizzard account
How the silence penalties work
Playing Blizzard games on more than one platform.
It is not possible to merge the progress of two or more games into one.