You can use this service to reset your Battle.net password, which will remove most account locks.

Use this page if you wish to change/modify your Contact & Shipping address for your Battle.net Account.

If someone changed the email address on your account, or if you can't remember what it was, we can send you a text to recover your account.

What to do if you cannot log in after you changed your password

How to update your password if you are getting this error message

Account has been hacked or compromised.

Information about password restrictions and requirements for Battle.net accounts

Cannot remember Blizzard password and want to reset it.

What to do if you received a password reset email without requesting it