I've received an e-mail that said I got permabanned (well 90 year ban to be exact - 2105, but I don't think I will be alive by then)
However, I have no past history of suspension or chat restriction, and maintained healthy behavior for every game, so I doubt it is a behavior issue.
Only other possibility would be a third party program, but two programs that I've used before permabanned (LVOC and Curse voice) are allowed by Riot Gaming (link to back up my statement: http://boards.na.leagueoflegends.com/en/c/player-behavior-moderation/5dmkJinG-3rd-party-applicationsmodifications-whats-allowed-and-what-isnt)
I've sent in support ticket for the resolution, but it appears that people often get macro-answer for their first response. Can any Riot members provide more detailed information regarding my ban (or unban me if it was false positive)?