Suspended for minor incident. Unfair please help

To see about submitting a case review, you would need to go to
http://enforcement.xbox.com

There is no "insta-ban". The incident in question was reviewed by an XBLPET member, who reviewed the evidence of the incident and determined that an infraction of the Xbox Live Code of Conduct came from your account. Based on the duration of the suspension,
it was considered a minor infraction, but nonetheless one that was worthy of a suspension.

As to what you describe, you would NOT be suspended for that. If you join a match and are "voted out" for nothing more than not being part of the intended group, you would NOT be suspended, as such an action is not an infraction of the Code of Conduct. Even
if the leader did report you, XBLPET would have reviewed the incident and determined you did nothing wrong other than appear in a room where they wanted to control who was in it. False reports are tossed and do not result in suspensions.

Not sure about that Elite controller, seems like players with it will have unfair advantages, even if minor.

Yeah but surely getting suspended 2 times for the same incident is just added punishment. He even messaged me saying he's going to get me banned again from the same thing after he waited till I was not suspended any more, I've reported for harassment yet
nothing has been done to rectify this.

It feels as if I'm getting punished for being harassed. I sent 2 different messages in the same incident that contained swearing, he reported the one message then waited till I was not suspended to get me suspended again, How is the enforcement team not
recognising it's from the same incident and he's blatantly harassing me with the 4 messages in a row he has said, trying to provoke me??

Generally it takes more than one report/complaint before someone is suspended. This is to prevent people from being suspended for unwarranted or unfair claims of abuse.