So I played a couple of games with and against him and I don't think he's ruining on purpose if he's really someone that came back to play recently and not just a trolling ban dodger.
However, he needs to learn how to play better with the team and not randomly feed without cause.
Jugg - Not bannable but he jungles with it and it instantly pisses everyone off as it becomes a 5 v 4 knowing he won't be able to carry late either.
Gave him aegies to push with the team to rax but he instead goes solo ramboing and dies despite the team telling him to back and move with team.
Drow - he rarely uses silence and just an easy target to get killed over and over again
@4ces Players are getting annoyed with you cuz you either feed, farm when you should be joining team fights, or solo pushing a lane and getting caught pretty easily.
If you are a returning player that's a lil rusty on the mechanics, you need to surround yourself around your teammates and play less recklessly.
Also, if it's the poor connection/lag that's causing you to play so shitty, you really should not be joining at all.
You bashing on the admins to counter the argument here won't do you any good either.