Perfect reputation record but I'm being told I'm suspended

Yes, it's been glitchy for a few months. As long as you can still sign in and play, it's just a notification glitch and you're not actually suspended. It usually clears itself out within a few days, but as far as the apps go, you should be able to report issues trough the settings of the app.

Hello, My name is Jesse. I'm an Independent Advisor and a member of the Microsoft community and I'd love to assist you today.

It appears there's an issue with enforcement page/action and it appears to be showing permanent bans in place of most other bans received and there's no way to confirm this as the page itself won't let Gamers login to check.

I know it isn't ideal but what I can advise is that you hold on a few days until the issue is resolved so you can sign in and check the true status of your account on the enforcement page. Unfortunately even support cannot assist with this as they are not privy to enforcement actions.

What I mean by my question is whether, in the experience of others, should I expect Xbox support/enforcement team to be responsive? Or are my efforts in vain, Clark Howard's proverbial "Customer No Service"?

Again, thank you for your help.

Yes I learned thank you though

Calling people by that term will get you suspended, the best thing to do is to wait out your suspension. If he teamkilled you, best thing to do is report him for toxic behavior or for teamkilling. Sorry about the suspension.