Probably just an arsey manager when it comes to dealing with returns. They know they have to change it if requested - When I worked there we were instructed to instantly exchange 360s provided the seal was in tact due to the high failure rate.
Should have phoned customer services mate, they'll kick off about things like this. In fairness, GAME was pretty customer focused when it come to issues like this when I worked there, although I wouldn't go back
