How to remove or change the phone number on your Battle.net account
How to resolve this error when adding your phone to your Battle.net account
Some free games require that you add a phone number to your Battle.net account
Use this page if you wish to change/modify your Contact & Shipping address for your Battle.net Account.
This phone number is not eligible for a callback. Please try another number or visit battle.net/support/help/ for additional contact options. Thank you.
How to contact the Blizzard legal department.
What to do if you receive this error when adding your phone number to your Battle.net account
What to do if you don't receive texts from Blizzard
Information on Blizzard Phone Notifications