I use Games for Windows and through that I created my Xbox Live account. For some crazy reason it wouldn't let me create the gamertag I wanted even though it was available (it didn't use any illegal names or characters). Anyway, I figured I'd give it another try but the only way to change my gamertag is to do it via an Xbox console. I don't own an Xbox console and I'm not planning on getting an Xbox console. I game on my PC. Is there any way to change my gamertag? I emailed support but so far no response. Is there a number I can call instead?