My account got permanently suspended

Ok. Yesterday I was playing with my unranked friends in a normal game and my mic in skype stopped working. Of course then i used chat in order to talk to them. They, being my friends, called me r%%%%% and such in skype. My, not having a mic, was in chat retaliating this. Then i accidentally put it in all chat and i get reported. I have had one ban a year ago for one day. I have gotten one warning for toxicity. Just last week i got a notification saying that my account behavior has improved. Then after two games of this no mic type of scenario I get in champ select. BOOM! Riot has issued a ban. Im like wow thats surprising, probably a week ban or something. Then i go to my email. This account has been permanently banned... Two games. I PLAYED TWO GAMES WHERE I WASN'T EVEN INTENTIONALLY TOXIC. BOOM! PERMABAN. Riot I can't stand for this. I've never been chat banned. At least you could give me a week heck a year chat ban. I have 4 years on this account, 500 dollars of stuff. Im never toxic in ranked. Please either rid of or reduce my suspension. Two weeks is fine man i just really want my account... All of my friends play this game, and it is one of my greatest connections to them. Let me be with my friends let me have fun with them. Riot, I know you really love your players, and I thank you for that. That's why I know that you will be caring enough to reduce my ban.