What to do if a friend or family member has access to your account and has updated the account details, are preventing you from accessing the account, or has taken gold or items
It is not possible to move Battle.net Balance between accounts.
How to correct or update the first name on a Battle.net account
What to do if you are receiving emails for another player with a Gmail similar to yours.
How to change the language settings in your Blizzard games
How to change the country/region of residence on your Battle.net account
Regaining access to a Battle.net Account when the email is not accessible.