Permanently banned

So few days ago my 14 days suspension passed and i started playing lol again, i played lots of games, got many honors, almost didn't use chat at all and then in few games in a row i get toxic players that feed intentionally. I got players like these in like 4 games and i was strong enough not to say something to them because as a jungler i was hard flamed in gold elo. And in this last game i got a feeding mid laner that was toxic to everyone in the team, feeding top laner that wasn't saying anything, feeding adc that wasn't that toxic and feeding support that was really toxic. The game started nicely i was like 4/2/3 with rengar my teammates started with early lead and when i decided to clear my jungle they all started dying and flaming me hard. At first i didnt really say anything but then they just kept dying the entire game literally and cursing me. I couldn't really take their shit anymore and i started playing worse and i started arguing with them, so my score went to 6/7 at the end but that doesnt really matter, the point is that i got verbally abused the entire game and when i said like 3 bad words in total in just 1 match i got perma banned. I really think my account got banned for no reason because they are obviously 10 times more toxic than me and they are still playing the game. I guess it doesnt matter if you are nice for 50 or 100 or 1000 games if you tilt in just 1 game you are punished, and not punished by riot, but by 6 yo who are sitting on that computer and typing so yeah fuck this game. (sorry if my eng is bad)