Why you may have received an email about your Diablo II (2000) characters or account expiring.
What to do if skins, mounts, or heroes that you previously obtained have disappeared from your Heroes of the Storm collection
Buying Blizzard Balance as a gift
What to do when a physical authenticator gets out of sync
Recovering a Battle.net Account when the email address has been forgotten
How a friend can contact Customer Support when she/he can't log in.
What to do if you want to report the infringement of Blizzard's copyright or you are looking to obtain a license to use Blizzard's intellectual property
How to resolve the "Shop Closed" error in Hearthstone
What to do if you didn't receive a Hearthstone product after purchasing it on the Battle.net Shop or in-game on a desktop computer
What to do if you cannot change the email or phone number that shows on the login screen because the field is greyed out