My wife has been trying to change her e-mail associated with her gamertag for the last 4 months. All without any success. The account no longer has money on it, and the target e-mail was made years ago. But she's still getting blocked by the 30-day waiting period. We've talked to support online and over the phone various times and each time has been no help whatsoever with the standard "you need to wait 30-days" response even though we've been waiting for over 160 days and counting.