Childish Behavior

Today I met my first true 12 year old. Or at least I think. I was doing placements on another account (im testing a theory about elo hell), when i had a Graves top. He smashed teemo into the ground. We were winning all lanes everything was good. Then he got ganked and died. I figure jg is top, I'm going to go get drg. And I did. He started pinging his tower like mad. Ekko came to help, but the tower still died. I wouldn't have gotten there in time if i tried. I was Warwick, but my w wasn't up and I was all the way bot lane. Ekko left and Graves engaged two v one. He immediately blamed Ekko.

He flamed me for getting drg. Then sat under 2nd turret for about 5 minutes. Then the feeding started. Ekko was telling him all sorts of shitty things and I told ekko to knock it off. Graves decided to not group at all, sit in fountain, and or throw insults at us. When the enemy team took a tower or killed us all he'd say GG EZ and proceed to try to surrender. I reported him but that won't do anything. He didn't curse or use "trigger words". He just flamed like a child and said we were too heavy to carry, or didn't deserve him so afk. GG EZ WW DUMB HE TOOK DRG. It was just awful. I wasn't in a position to screenshot so I have no proof of what he said or did expect the highlight video, which doesn't have chat. I want him banned at the least.