It's been weeks and this dude's still not banned

It's been weeks that this guy called <removed by moderation> that keeps popping in my games, he always goes the same champion in the same role.. Maokai support.. Now, the thing with this dude is that he never really support or does anything, he always just AFKs under turret or in brush, and you'd expect him to fight with you but no.. He just stands there stacking and expects to get kills. I've lost every match with this guy and he really annoys the sh*t outta me. He expect people to be supporting him (That's really what he just told me) When I told him to help me in any way or go bot, he says that his ADC isn't supporting him(That's another thing he said). Now, it's been weeks and he still hasn't been banned and I know this isn't the place where I am supposed to put out player report BUT FOR GOD'S SAKE! JUST FREAKING BAN HIM FOR ATLEAST A WEEK. I've lost atleast 50+ LP just because of his supidity

P.S. Sorry if this seems all over the place. I am just really tilted and wanna die.