Follow these helpful tips to secure your account from hackers
Transfer Battle.net Balance between two separate Battle.net accounts.
Information about consolidating Battle.net accounts, and how to play on multiple Battle.net accounts at the same time.
How to attach an Authenticator to your Battle.net account
Information on where to update your Activsion Account Email
It is not possible to move a Call of Duty account to another Battle.net account
Troubleshooting steps for issues while linking a PlayStation Network, Xbox Live or Nintendo Switch account to a Battle.net account
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 merge the progress of two or more games into one.