Hey there! Nice to meet you!
I'm sorry you are experiencing this.
Based on your description, the hacker was able to remove the account's primary email address/security info and replace it with their own email address, which is why you received the error that your account may have looked like deleted when signing in.
Since the security info has been replaced by the hacker, I'm afraid there is no other working method to recover the Microsoft account, and Microsoft Support cannot help either.
Lastly, if your subscription is still active in your account, you will need to contact your bank immediately and request to freeze all charges from Microsoft, cancelling the subscription on its renewal in the process and preventing unauthorized purchases.
You may also need to request a new payment method.
Thank you for your understanding.
Best regards,
Darhyl