Auto Fill is making me loose games!

Ok so I have read post about auto fill not being a bad thing that it just 1 very 10 games or so. But recently I been getting auto filled every 2 games or sometimes every 1 game it's ridiculous because it makes me loose games. Also you know how you get one of the guarenteed roles you selected because you you recently filled? Well I had that small so called ""GUARANTEED"" yet I get auto fill ONCE AGAIN! Riot seriously needs to do something about this.