Lately I'v been trying to change my gamertag into a new one, but the console gave me the 80190848 error code. So I cross-checked all the bill information in both my Xbox Live account and in my Microsoft account and everything was coerent. Furthermore I made a few purchases on the marketplace to make sure my payment options were up and runnning.
So I called the Microsoft phone support in my country just to find out that there are two identical gamertag related to my account and for that I cannot change my gamertag.
They told me to post the issue here so it can be sorted out by the support team.
So here I am, hoping in a prompt resolution.
Thanks in advance.