Reporting another player that is using an offensive or inappropriate BattleTag
How to report a player who is threatening with harming another person or a place
How to report another player
How to report cheating in Diablo Immortal.
How to block communication from another player in the Battle.net Desktop App.
How to report harassment taking place within Battle.net chat (mobile or desktop)
How to report inappropriate language or names in Diablo Immortal.
Information on how to report forum posts
Reporting an Exploit or Hack
Reporting your own behavior won't prevent action.