Ban issuses

Dude for f.k sake to something with that ban this is not f.k fair. Ok may I had problems with my pc and got disconnected, ok fair enough, but when i wait 20 min, i accept, i choose my champion and i go to the bathroom like a f.k. normal people and when i got back i had to wait another 20 minutes because another player quit it. Thanks for your not that smart and not that fair "ban"!!!!!!!!!!!!!!