I wish I had better news for you, this forum is just a user to user forum, for security purposes, no-one here has any account access, when a Microsoft account is hacked, if the hackers change the associated data like the Email, then that account is usually no longer recoverable, try using the process they provide on this link to recover a hacked account, if this process is not successful, sadly, that account cannot be recovered.
If that process is not successful in recovering your account, you will need to try to contact Microsoft support to ask them to close your account to protect your online data.