Ranked Afk's As Support

So, I WAS Silver 4. Then every game I played had at least one afk, I am now s5 with 0 lp. Is riot going to do anything about this? Some sort of compensation? This is ridiculous. I'm just sona, I can heal my team all i want, but i can' t push too hard by myself, and I can't make my team push. I don't know what to do.