How can I report a hacker to take their account down?

Hi and thanks for reaching Microsoft Xbox gamer's community. My name is Josef.
I'm an Independent Advisor and a Microsoft Xbox user like you.

Hope you're doing great today despite this Aiden

Is sad to hear that your account has been compromised and now the hacker is impersonating/using your gamertag

You can report the player with your friends, and if possible try attaching proof of previous account ownership in your report.

In case you need it, you can learn how to report the player properly:
https://support.xbox.com/en-US/help/family-onli...

About requesting the account closure, sadly is not possible to do that.
In order to close a Microsoft account, you need sign in with that account (is stated in the link below):

https://support.microsoft.com/en-us/account-bil...

Hope it helps, but if you have further questions feel free to ask

Greetings

I can only report the "hacker" not the fake moderator, Don't know how to gain access to his page to report him too.

I think we should get extra or free live since they let this happen, how does a few hackers take down a billion dollar company?

Microsoft does their best to ban hackers but it can take time for them to go through all the reports they receive on a daily basis and when it comes to hackers being at the top of a leaderboard it's the resposibilty of the publisher to remove them.

You report via the tools on your console.Click on their profile & select report player.You'll also want to block this person as well.That's the only way to report someone to bring it to the attention of the enforcement team.

They'll have access to any messages this person has sent.

As you've been booted offline then it sounds like a ddos attack which is down to your isp to resolve as ddos attacks are done via your broadband/internet & not box live.

There's a FAQ about how to deal with ddos attacks HERE