How to delete gamertag from suspended account?

Hi and thanks for reaching out. I hope you’re doing well. I'm an Independent Advisor and a Microsoft user like you and I'll be happy to help you.

If your Microsoft account was permanently suspended, you won't be able to access the account or use the associated gamertag. Unfortunately, there is no way to transfer or delete the gamertag from the suspended account. In situations like this, it's best to create a new Microsoft account and choose a new gamertag.

Hello again, yes, the Gamertag will become available but you won't be able to get it to your other Xbox account.

This is because after changing the Gamertag, the old one is suspended in the system, and unfortunately Microsoft does not disclose how long the Gamertag is suspended.

They emailed me saying that "The account in question is not currently suspended from Xbox LIVE due to Code of Conduct violations, or the gamertag does not exist. If you are not posting from the Gamertag that was suspended, please re-post with the Gamertag
in question. If you have encountered a billing or payment issue, please contact Xbox Support" is it possible there is a mistake? My head is literally going to explode because I have no idea how I could've gotten banned.

You're going to need to create a new dummy email address and move gamertag B to it so that the email is freed up to move gamertag A to it.

Hello xboxizdotcom! I do apologize for this, but once a Gamertag has been permanently suspended from Xbox LIVE, it can be quite some time before that name is availiable again. So since the account has been suspended, you will be unable to change any account
information, including the Gamertag until Microsoft decides to reset old unused or Suspended Gamertags again. I hope this helps!