Account has been hacked or compromised.
How to appeal an account action.
How to report cheaters in Warcraft 3, StarCraft: Remastered, or Diablo 2
How to consolidate multiple Blizzard accounts into a single account.
If you forgot your Blizzard account email, you can use SMS Protect to find your account.
You can change your BattleTag in Account Management.
How to move a game account to a different Blizzard account
How to claim a code for a game, a product, or Blizzard Balance.
Account was banned for botting, which can result in removal from leaderboard. May be a result of compromise.
Changing language settings for game and/or communications from Blizzard