First time ban immediately 14 days. Next time permaban?

So I finally got a ban from the tribunal telling me that I got a two week suspension for intentional feeding. Yes, I went 2/16 with a Jhin and I can't deny the fact that at some point me dying turned from a bad game to a lack of interest and giving up. However, I never go into a game with an incentive of feeding and ruining it, but in this one it was the other teammates' attitude that was unacceptable as well. I know that other people's actions should not determine mine and I agree with that, but they should at least be punished too for their behaviour.

What actually worries me is that im pretty sure that I never received a time ban before on my account, especially for feeding, unless that happened while I was away and someone else played. From what I read there is a 3 day ban first, then a week, then two weeks, and then a permaban. From what I know I received the two week ban as a first time punishment. I only ever got one or two warnings, but those were not because of feeding. So my question is, would that mean that if I get a second suspension, that would already be a permaban? That seems pretty harsh to me because I constantly read about people getting multiple suspensions and being able to improve and reduce their time again and that you would really have to try to get a permaban. But this is exactly why I don't understand having a 14 day suspension as my first punishment.