Account Recovery Request - Hacked Account (Email Changed)

Disclaimer: Since you are using English language for this post, I will respond in the language you are using. As this is the Korean forum, you are welcome to let me know if you need me to respond in Korean. I respond in the language you are comfortable with. 

Please note that our forum is a public platform, and we will modify your question to hide your personal information in the description. Kindly ensure that you hide any personal or organizational information the next time you post an error or other details to protect personal data.  

Hello 한민 정

I’m sorry to hear that your account may have been compromised.

Since this is a public community forum, we’re unable to verify ownership, review order/payment information, or make changes to a Microsoft account here.

For hacked or compromised Microsoft accounts, please use the official Microsoft account recovery support page here: Recover a hacked or compromised Microsoft account. The sign-in helper can guide you to the available recovery options.

If the recovery form keeps failing, you can also contact Microsoft Support for further assistance:

Please note that this is a user-to-user support forum. Moderators and contributors, including external Microsoft employees, are not allowed to directly interfere with Microsoft product features or access back-end systems. Our role is limited solely to providing technical guidance on reported incidents, requests, or ideas.  

1. Open a website link - Contact - Microsoft Support 
2. In the box below "We're here to help", type Microsoft 365, click "Get Help", and then click "Contact Support" below. 
3. In this section, you will need to sign in to your Microsoft account. 
4. Select "Microsoft 365 and Office" under Products & Services, select "Technical Support" as the category, and click to confirm 
5. You can select " Chat with a support agent in your web browser " to access the chat window. 

I hope you can get the support you need, have a nice day.