Wrongfully Banned Account

So to give you some background into what happened, I have been banned before on the same account for 14 days due to afk behaviour because I had trouble with my internet, after I fixed it I tried playing the game on stable internet and had no problems at all. However, my last game was an AR URF game and it coincided with a premade team of 4. They decided to leave me alone top so naturally i just questioned their decision and they began hailing abuses and racial slurs at me. They were calling names, abusing me, and harrassing me to extreme measures. I kept my cool and told them they are getting reported after the game. I also informed the enemy team and told them to report my team as well. Seeing that my team was abusing me in all chat as well, the enemy team saw that I was saying the truth so they decided to report them. However, the enemy team said they are going to report me and that Riot wouldnt take a look at the logs simply because they don't care. They said they will get me banned even when I did not say anything wrong, did not do anything wrong, and did not curse or abuse anyone. And to my surprise they were right, 5 seconds after the game I received an instant permanent ban. How is this even possible? Does riot hand out permanent ban to players without even looking at the chat logs? I have the entire game recorded and the entire chat screened, so if Riot took 5 minutes to look into it and see what was going on in the game they would realize banning me was a huge mistake. I really don't know what to do or how to recover my account. Any help would be appreciated