Blitz Pull

This has happened to me two times, but I'm playing against a Blitz, and I'm trying to position my carry to another spot so they won't get pulled, but Blitz still follows my carry when he is in the same spot. It's so annoying. Also, it's impossible to position your carry in an optimal position when there is an assassin comp and a brawler comp with blitzcrank. The only way is to put them in the middle, and the assassins will one shot the person next to them, and then one shot your carry, or the enemy front line if they have aoe will delete your carry because you can't put them in the back. It seems impossible to play this game because you have to be lucky enough to go brawlers and get the items for it or go ninja assassins or ninja elementalists.