Steps for linking an Activision account and Call of Duty Profile to your Battle.net Account.
What to do if you need to unlink your Activision account from your Battle.net account
How to unlink your Twitch account from your Battle.net account
Information on using the same Battle.net Authenticator on more than one Battle.net account
Information about how to unlink your Activision account from your Battle.net account
How to permanently delete an account.
How to pay with an alternate PayPal account