I had multiple suspensions for the same thing, appealed them and they were approved except...

You only get 1 chance to appeal. If the enforcement team denied the suspension, there is nothing else that can be done.

But all suspensions were for the same thing so I appealed with the exact same message for each appeal, how can they see an issue with 3 of my suspensions and appeal me for it but then see no issues with 2 of my suspensions and deny my appeal when they're all for the same thing and I used the same message for each appeal? I'm trying to make sense of it but It just doesn't make sense to me.

But how do I get in further contact with the enforcement team if my appeal got declined? I got multiple strikes for the same thing which led me get a 1 year suspension.

My appeals were denied

Then theres nothing else that can be done except waiting out the suspension.

I had the same problem but I found the solution. There were multiple accounts signed into the xbox. I signed all of them out (except for mine) and party chat started working just fine.