I GOT PERMA BAN? ( account: TSM FrostBio)

Ok so first of all, I was playing with a 5 man que with my real life friends. I was trying to impress my friends by being cocky. I didn't mean to offend them I was just joking with them saying "get gud" and "ez". I admit that i said some bad words like the f word and your mama's joke and I meant that as a joke too. And I'm not the only toxic one in that game you should look at the chat logs on that game and I was getting flamed by ALL 5 OF THEM and I was just making a comeback and at some point of the game I did stop for 5 minutes not replying to their toxic jokes because I thought that It was getting serious and its not funny any more. I spent 300 dollars on that account and played for 3 years almost and a PERMABAN?? come on riot owners/workers. I don't deserve a perma ban for being toxic on one game. I spent thousands of hour playing with that account and banning it that quick? Makes me wanna quit league of legends just because of that. I really love this game and I wanna keep playing it forever. I DONT DESERVE A PERMA BAN, atleast SUSPEND a month or two or a perma ban on chat would be better than perma ban. PLEASE RIOT I BEG YOU UNBAN MY ACCOUNT AND JUST BAN ME FOR A MONTH OR TWO AND PERMA BAN ME IN CHAT SO THIS INCIDENT WONT HAPPEN AGAIN PLEASEEE I BEG U