How to report harassment taking place within Battle.net chat.
Reporting your own behavior won't prevent action.
How to report a player for cheating in Diablo III
Steps to report players for harassment in Call of Duty: Black Ops 4
Steps to report players for harassment in Call of Duty: Modern Warfare
How to report players in Diablo III.
Reporting an Exploit or Hack
Information on how to report forum posts
Reporting another player that is using an offensive or inappropriate BattleTag
How to report harassment in Battle.net Groups