My braces are cutting my cheeks and wax doesn't work?

I know how you feel! I had the same problem, and the wax is rubbish. So i used gauze and just cut it so its small enough to fit over my brace. You should try that its really worked for me and my braces dont rub no more. If its the wire on the back you should go back to the orthodontist and get them to cut it shorter, i did and that helped a lot as well :)