Very Wrongfully Banned

I was playing a game of league of legends, I was the jungle and playing Warwick. So obviously I wasn't ganking until level 6. That is how you play him. The mid laner, my buddy in the skype call fed, and told me in the skype call not to gank him. I didn't get mad at him or flame him I was just like ok. But then our alistar turret dived at like level 4 ???? By himself died and went off on me. Started saying "Jungle its your fault mid fed, you didn't gank" Didn't say anything cause I knew it wasn't the mid laner told me not to gank. Then Alistar didnt stop so eventually I said something back, called him bronze, and probably used some uncalled for language. So he instantly started saying to report me and blah blah but very obviously he deserved it more than me. But guess who got banned... The person who used the bad words. This is my first time getting banned, but it was a 13 day ban. I would understand a one day or even week ban, and also I have had friends get punished for being toxic, and the first offense for them was always a chat ban. I never got a chat ban or anything. This ban is unfair and kind of ruining my only chance to play much, spring break. I never even got a chance to appeal it. You don't even have to unban me if you ban the Alistar in the game he deserves it more. I wasn't talking really until he instigated me.