My son went in to my Bungie account and somehow changed my gamertag. I am trying to put it back to match my steam and Xbox account but it says I cannot change my name? Is there a way to get my username back? I just want to revert it back to what it was. I was reading that you only get one username change for some weird reason, which now screws me. I am worried I will have to delete my account which I have had since Destiny 1 started.