MacBook Air Camera not working

So my 11'' 200 ggb MacBook Air is brand new like 2 months old, never dropped it and never spilt anything on it and today it randomly says the "camera isn't connected" on photobooth and facetime. So i called apple and a man helped me through resetting the SMC, didnt work. So we tried a bunch of other things like restarting it shutting it down and what not. He said his last suggestion was to redownload OSX mavericks which is a 10 hour process. It just finished and still it didn't work. I mean if you spend 1 thousand + on a computor shouldnt it work perfectly...? So he said i have to take it to a genus bar to get a new camera. i havent asked yet but if this cost alot of money im not doing it because i havent done anything wrong to make this happen. Its a very lightly used computor im a teenager. grrrr I cant belive thisssss.😢