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.
Phishing scams can take many forms—fake websites, suspicious emails, and threatening in-game whispers are the most common types.
How to move a Diablo III account off a Blizzard account
If you forgot your Blizzard account email, you can use SMS Protect to find your account.
Playing Blizzard games on more than one platform.
Change your Blizzard account email address.