trendy warfare 3 corrupt

i purchased mw2 when it first got here out and every week after taking part in it it got here up with this factor saying that the sport has been corrupt, i attempted un putting in and reinstalling it nevertheless it simply retains saying the identical factor, so i let it go and now i simply purchased mw3 not even 10 minutes in the past and it’s saying the identical factor that the sport is corrupt , i received the sport for $100 i need assistance fixing it i don’t know what to do or even when i ought to refund it cuz it’ll take 14 days to refund. plz assist