It's very simple, violate the rules and you'll be punished. If you get perma banned. They won't unban you. You could of spent hundreds, maybe even thousands over the years playing this and that won't give you immunity to the reporting system. I get you guys are frustrated and it sucks but that's a lesson learnt, don't be toxic and don't flame.
I'm aware this is obvious but apparently to some people they think pouring their hearts out to riot on the boards will help them out.
Bottom line, if you received a ban or restriction or even suspension, it was most likely deserved in maybe about 97% of cases.