Microsoft account hacked and email was changed...

The email associated with my Microsoft account was changed by a hacker. Several other accounts on my PC were also compromised, including my Gmail, Steam, and Epic Games accounts. Fortunately, I was able to recover all of those accounts, secure them with an authenticator app, and remove the hacker's access. Unfortunately, I have been unable to recover my Microsoft account. I have submitted the account recovery form more than six times, providing as much information as possible, including previous account details and payment information. Each time, I have received a response stating that there is not enough information to verify that I am the account owner. What makes this especially frustrating is that I have successfully recovered all of my other compromised accounts through their support teams. I also have screenshots of purchase receipts from Microsoft, including proof of my Minecraft purchase, which clearly show my ownership of the account. However, the recovery form does not provide any option to submit additional evidence or documentation. I am not posting this simply to complain. I am looking for advice on what my next steps should be. If anyone has experience recovering a Microsoft account after the email address has been changed, or knows how to contact a Microsoft support agent directly, I would greatly appreciate your help. If a Microsoft representative sees this post, I would be happy to provide screenshots of my receipts and any other information needed to verify ownership of the account.

Thank you,