I was permanently banned for arguing with an autolocker

I was recently banned for arguing with an autolocer. So what happened is I joined que, called adc, then was about to pick draven when I saw: he wasn't available. SOmeone else picked him.... so I'm like "dude, I called adc first, me please' and he claims that I was second and shows his chat logs. I'm pretty sure he modified them, but idk. So I copy paste my own chat logs, which proves 1. I joined the lobby first of all of my team, so I am the one who is right 2. I called adc first. The 4 others, I'm pretty sure were skyped because they didn't talk in the in-game chat, proceeded to tell me I was second and that I was jg. When the game started, I was really bummed out because KNEW I was adc and I called it first. The draven endedn up dying in the first 3 minutes of the game so I said "if only I was adc". THen an argument proceeded for the rest of the game because at 10 miunutes he had 9 cs and then my whole team was calling me toxic for saying he wasn't a good adc.... If there are any rioters I can talk to i'd appreciate that a lot. I would be more than willing to sit down and talk to get my account back.