Can't change gamertag, something happened on our end. Waiting a bit might help.

Hello, first it's a pleasure to be able to help you today.

My name is welcome to the community and Merry Christmas.

Hello Vincent, Gamertag exchange processes and consequently payment in the Xbox/Microsoft store are fully automatic, so in situations like this, the ideal is not to make any more attempts and wait 24 to 48 hours before trying again.

I am having the same issue.

Does anyone have a solution.

This is why Sony will always win with the playstation, because they have 24 hour support 365 days a week

Sorry to hear it. Not all Gears games are available in Qatar. Changing your location will not resolve this issue as if the content is not available it still cannot be downloaded.

http://www.xbox.com/ar-QA/Search?q=gears+of+war

If the games are in the link I provided please give more information on what happens when you try to redeem the codes. Be as specific as possible.

Hey there moontails -

When trying to buy Xbox Live Gold, are you attempting to purchase it through your console or on your PC/mobile device?

This is usually an issue with an outstanding balance or an expired payment method. Check account.microsoft.com for either of those. If that is not the issue contact official billing support at support.xbox.com/contact-us