What can we do about elo boosted and ebay accounts?

I dont post a lot here but this is just making me angry. I was playing some flex Q trying to get gold and as soon as i get to promos i get matched with these "diamond" accounts . These players end up the game with scores like 5/11 or 7/15 and it seems wierd to me because they are laning against weaker opponents. There are 2 answers to this: a) they are trolling on purpose b) they bought their accounts. These players just play like idiots and in no manner a diamond should play and ruining the game for the rest of us who want to get rewards by the end of the season. I would rather play with normal players of my own elo. What can i do about this besides reporting it??? Ty {{sticker:sg-shisa}}
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