Payment with GSM

You'll want to see if you can remove the payment method at http://account.microsoft.com If not, you would need to contact support and speak to billing as that is not something
that can be handled via the forums. http://support.xbox.com/contact-us

Hello DavidBrulmans,

Thank you for posting on Xbox Forums. In regards to removing the GSM number from your account, you will have to go to your payment and billing within your
Microsoft account and remove it from there. If you are not able to remove it from the website you will need to
Contact Xbox Support for further assistance.

Try this:

• Log into Support.Xbox.com
  
• Scroll down, Click on Contact Us
  
• Step 1: Click on Ask a Question
  
• Step 2 : Select your Product
  
• Step 3 : Select your Issue
  
  • Select – Call me back
    

If you have any other questions please feel free to reply back letting us know. Thank you again for posting on Xbox Forums.

Competition is always better for the consumer. Just look at the AT&T/ T-Mobile merger, if it goes through AT&T will be a monopoly in GSM cellular carriers and prices will only go up.

Fallout definitely has some of the best. That's from New Vegas for completing a mission but all of the ones from Fallout 3 and New Vegas are fun and look quirky

it may have been mentioned above, i havent read all the answers, but some routers or modems, especially GSM devices like one of the ones i use has a DMZ option only, if there is a dmz option, open the IP address for ur xbox, a DMZ removes the firewall for
the one chosen device, it means ur xbox is open to an external attack but highly unlikely as the xbox doesnt hold info or personal files,