my case review was upheld

If the case review as upheld that means they looked into the reasoning on why you were suspended again (they already investigated it once before that when you were issued the suspension) and still found you did something to violate the code of conduct.
There's nothing else that can be done.

The suspension is permanent does this mean that ive lost $2000+ worth of content because of a false accusation?? im not satisfied woth the way this case is being treated

Hey Eovsi

Thank you for taking the time to post this on the Xbox Forums. We understand that you are inquiring about an upheld case.

No, there is no way to supersede any decision made by the Enforcement Team.

If you case was upheld, then the only other option would be to wait until the suspension is over.

I hope this help clarify anything that might not have seemed clear.

Hey Eovsi

Thank you for taking the time to reply to this thread.

As you have already been provided with all the info in regards to this matter by Xbox Forums MVP Ambassador and Moderator

Smwutches, we will now be locking this thread.

If you have any other questions or concerns that differ from this matter, please, feel free to create a new thread and we will cater to you there.

Thank you for being a part of the Xbox Family and we wish you a wonderful day.

You forfeit anything you had on the account in the case of a permanent ban. Since you submitted a case review, that means the enforcement team investigated your account twice and determined something was done to violate the code of conduct/terms of service.