Auto Fill

I have been auto filled 3/7 games in ranked so far and there should be a choice for a role not to play. I do not enjoy playing support if I do not know at least one person who I am playing with and get tired of not having an impact on the game that I feel I should have as I enjoy playing other roles. Also being that almost 50% of my placement games were in a position that I am not comfortable playing due to the fact that I spend time playing other roles. Or at least make it so that you can't be auto filled what feels like every other game especially for placements. I have chosen the roles I would like to play for a reason and do not want to be punished because I don't play the role all that much, but no one else wants to play it. I do not mind taking extra queue time in order to get one of my selected roles, and therefore do not enjoy the fact that I now have to wait an extra 20 minutes at least before I can play something I actually might enjoy playing.