If sopmeon is on my block list that means we dont want to play on same team anymore for afk, feeding

If sopmeon is on my block list that means we dont want to play on same team anymore for afk, feeding.ect.....so why riot still creat game for you and put them on ur team?..... please dont be idiotic about this people are baned for a reason.... why am i seeing people that i blocked show up in same team when game is created? guy? your thoughts? And teemo is such a bad champion mid and late game heis scale is terrible.....pros even dont play teemo balance it please(i want this so bad..)