Ascendents in Silver lobby

Can you tell me why I am getting Ascendent players in my silver lobby? and BTW all of the opponents were smurfs, they were boosting the Ascendent reyna to immortal in silver lobby. I was banned from COMP for a week due to AFK, I get a lot of powercuts. When I appealed it to them, they are yet to respond to my mail. What are they going to do about smurf accounts and matchmaking?