dynamic queue premade troll

Dear LoL players, I just played a ranked game, in champ select a guy asked me if we can swap lanes, I said nah, he picked velkoz, and trolled my pick, I didn't give up and chose zed mid, then he was walking mid and I straight said in all chat report velkoz for troll champ select picks pls, then velkoz said I'm lying and that I'm the troll and I should be reported, he started flaming me in normal chat and every 20 seconds literally said "report zed for flame troll and lie", or "OMG zed stop flaming and trolling noob", then his premade karma join the fight flaming me in normal chat, and spamming report velkoz trolls, lies flame, then they talk with master yi in hungarain telling him to report me and say in all chat to report me for flame troll and lie, they literally spammed that, They also flamed me in hungarain in normal chat, I understand hungarain and I realized they were flaming me, of course I didn't shut up, I started typing back that they're flamers and and trolls and that they're premade from the same country and such. Waste of 48 minutes, after the game they flamed me in the chat, and spammed report zed for flame and troll, I reported all 3 of them hoping velkoz will get banned, 14 days isn't enough, a permabann will be great to keep this toxic troll away from our rift, I want a rioter to review the case and punish him, he doesn't deserve to just slip away with it, I want this guy banned so he won't do this shit ever again. Please help me bann him