How to report a bug in Diablo III
If you encounter a bug in one of our games, please report it to us.
How to report a player for cheating in Diablo III
How to report harassment taking place within Battle.net chat (mobile or desktop)
How to report players in Diablo III.
Troucleshooting steps for crash problems
Troubleshooting for game crashes with error "The application encountered an unexpected error"