For your privacy and security, I have covered the personal information included in your post. Please avoid sharing any personal or sensitive information publicly, such as serial numbers, order details, email addresses, phone numbers, or case-related information.
The most urgent step is to determine whether the account is still pending closure rather than already deleted. If the account is still within the 30- or 60-day grace period, successfully signing in and completing the security verification will reopen the account and cancel the pending closure: Reopen your Microsoft account
Because the attacker appears to have changed the sign-in alias and added an unfamiliar passkey, please use the Microsoft Account Sign-in Helper. If possible, complete the process from a trusted device and location previously used with the account, and provide the original account information as accurately as possible.
Please note that this is a user-to-user support forum. Moderators and contributors, including external Microsoft employees, cannot directly intervene in Microsoft product features or access back-end systems. My role is limited to providing technical guidance on reported issues, requests, or ideas.
I know this is not the news you were hoping for, but I wanted to make sure you received the most accurate information about your situation. Unfortunately, no one in the community can directly cancel the deletion request, restore the original alias, or change the account’s security information. Regaining access requires successful ownership verification through Microsoft’s official recovery process.
For further guidance, please refer to How to recover a hacked or compromised Microsoft account. Thank you so much for your understanding.
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