THIS IS WHY I HATE PLACEMENT MATCHES

The highest I got myself in s5 was silver 2, I was silver 3 when i did my placement matches. I won 7 and lost 3 which i think is pretty respectable because I had a positive KDA in nearly all of them. I then get placed in Bronze 3... WTF WHY RIOT THIS MAKES NO SENSE RIOOOOTTTTTT!!!!!!