No idea why i've been banned

I have searched the internet and even talked to Microsoft about getting in contact with someone at 343 and this is literally the only way that I was recommended to contact their team. I am looking to talk to a customer service representative from 343 to explain my over a months ban on matchmaking. There was no email, no warnings, legit nothing and then one day I log on and I can’t play the game for almost a month and a half now. And on top of that I now have no way of reaching out to contact someone about why I was even banned in the first place. I am super confused because I have no reason to know why I was banned in the first place, if it was legitimate, if it was warranted, or the reason of the ban in general. Please can a 343 member reach out to me and help me figure this out, because it is severely frustrating at this point. Please reply soon, as I am eagerly awaiting a response and solution to this matter.

Likely means you either afk’ed for numerous games or you said something very inappropriate in the text chat or in your clan tag.

Both H5 and MCC have dedicated ban threads pinned to their support forums. Post in there!