I followed this help article to the letter http://support.xbox.com/en-US/billing-and-subscriptions/account-management/switch-gamertag-to-different-microsoft-account and I am trying to execute what is Step 4 on that page, and I keep getting code 80154013. I called support and Katherine told me that I would have to wait 30 days, even though that support page pretty clearly spells out that you only have to wait 30 days if you want to do a complete rotation of 2 tags. I just want to have 1 tag, 1 Microsoft account, so I shouldn't need to wait.
It is weird, because I can still sign into xbox.com with my Microsoft account 1, and Microsoft account 3, and they will both display the same gamertag in the upper right. When I try to open 'My Account' while logged into the Microsoft account 1, it gives me an error. I also can not log into my Xbox360 with Microsoft account 1, so maybe the transfer didn't go through completely?