How to block communication from another player in StarCraft II.
Information about how to purchase a gift to a player from another region.
Reporting your own behavior won't prevent action.
How to report another player
Reporting another player that is using an offensive or inappropriate BattleTag
How to move a game account to a different Blizzard account
How to report a player for cheating in StarCraft and StarCraft: Remastered
Information on the Blizzard Authenticator
How to report a player in StarCraft II
How to report a player for cheating in StarCraft II