I Bought the english, but got the french :/
its kinda cool tho, going to a new place with different language as if I'm in a new land..
anywho,
if anyone else DID do this, what you gotta do is, call XBOX support or contact them, (make sure you have 1600 microsoftpoints) than you tell them your problem, and they well say (after a while) you gotta buy the english version, than they'll reinburse you for the french