Hey there! Nice to meet you!
I'm sorry you are experiencing this.
Since you mentioned that you want to suspend your hacked account, you may reach out to Microsoft Support, as they can possibly "Suspend" the account permanently once they have confirmed that it can no longer be recovered in order to prevent the hacker from using it:
Type "Microsoft 365 sign-in problem" > Click "Get Help" > Scroll down and select the option "Sign in to contact Support" > Microsoft 365 and Office > Billing and Account Profile Questions > Confirm > then select "Chat with a support agent in your web browser"
Thank you for your understanding.
Best regards,
Darhyl