Managing personal Outlook.com account settings, security, and privacy
I understand your frustration.
Unfortunately, there is nothing that can be done to recover the account once the hacker is able to modify the account security info.
Please be advised that Microsoft Support will not be able to assist you with manual recovery, unblock, and escalation for this case, as stated in this article, that they are not permitted to send password resets, access, or even change any details on the account:
As for the payment card and the subscription in your account, you will need to reach out directly to your bank immediately and request to block all charges from Microsoft, preventing unauthorized purchases and cancelling the subscription on its renewal in the process.
You may also need to request a new payment method.
Best regards,
Darhyl