14 day ban?

so i recently got a 14 day ban for toxic behaviour and yes i have to admit i was being quite toxic. but it wasnt for no reason the duo botlane decided they didnt want to play anymore and wanted to afk in base, they would walk out of base o reset the timer then walk back in. anyway i got really tilted and started flaming them telling him to game end ect. they decided that instead of afking now they would try and stop them from ending and flame me back harder for the remainder of the game. i told everyone to report them for negative attitude and trolling int he lobby and left and within a minute i had a 14 day ban i feel it was unjust but it doesnt matter, ive never been banned never been restricted, im just wondering what happens when i get unbanned how easy is it to get another 14 day ban or is it imidiatley a perma ban