RANKED queing System is Sh*t

So while trying to climb ranked ive realized the system is complete and utter sht and riot knows it too they said the chances of vsing premades would be lower... well its not... infact my last game I vsed a premade of 3 and as u would expect my team got stomped because they where probably using voice coms..and no one on my team was a premade...why is this sht happening riot? I mean at first we where ahead until the premade of 3 started getting their kat fed then after that we where utterly helpless to them... im so fking done