Can you actually do something about afk players?

It seems every other game now has an afk in it. Out of the 10 placements for this season, I had afk's in 3 of those games. I've now played 2 games since being placed, and both of those have had people who afk/troll aswell. It's almost impossible to actually enjoy a game when this happens, and it's more and more lately because autofill tilts everybody.
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