Troubleshooting steps to save a credit card in your Payment Methods page
Troubleshooting steps for the error: "account_not_trusted_write_locked"
Troubleshooting PayPal payment issues
What to do if you get the error HF-1 in Overwatch
Troubleshooting for game crashes with error "The application encountered an unexpected error"
Information on how to update your billing profiles.
What to do if you do not have a Battle.net account but are receiving emails from Blizzard Entertainment