How to cancel the o365 subscription without admin

Since your question is in English, I'd like to reply in English for clarity. Thank you for your understanding!

Dear @KKLAM,

Good day! Welcome to Microsoft Q&A forum!

Based on your description, I understand that you want to cancel your Microsoft 365 subscription, but you no longer have access to the Global Admin account and cannot reset it. You’re currently able to sign in only as a standard user, which means you don’t have permission to manage or cancel the subscription. At the same time, the subscription is still actively billing your credit card, and you’re unable to contact Microsoft Support because your login is being recognized as a personal account instead of an admin account.

If you're the only admin, in this situation, the Microsoft Data Protection Team has tools and processes in place to verify identity and regain access to administrator accounts. 

Please note that we have no control over user accounts, especially when it comes to logging in to your account, resetting your password, changing your access, etc. 

Therefore, if you are the only administrator in your organization, then you need to involve Microsoft Data Protection Team. Please try to find the related hotline number to call the frontline let them raise a ticket for you: Customer service phone numbers - Microsoft Support (Scroll down for Business users) 

In some countries, this is an automated conversation: First, when you call the hotline, they will ask you what kind of problem you are struggling with. 

Answer: Authenticator. 

A: What products do you use? 

B: Office 365 for business. 

Verification: Education or company account? 

B: For companies 

A: Are you an administrator? 

B: Yes. 

A: Are there any other administrators in your organization? 

B: No. 

A: I need one.... Service request? 

B: Yes 

(Important Note: Sometimes, you would hear the computer-generated voice at first, please kindly wait for it to end, and if an agent is available, you would be directed to them and get your support. Depending on your country or region, when you call the support number, you may hear an introduction of about 30 seconds such as "You can visit the link...". You can ignore this introduction and wait until you are presented with the options. Then press "1" as a business email user, and again "1" for technical help.) 

As an alternative, you can create a new tenant account and submit your request from there.    

To set up a new tenant, please follow these steps: 

• Visit Compare Office 365 Enterprise Pricing and Plans | Microsoft 365, choose any plan and click try for free to start a free trial.    
• Follow the guided setup process to create a new account for a new tenant. 

Once your tenant is created, you should be able to access the support portal and submit your ticket referencing your locked account without further issues.

In the ticket's description, you could refer to this message "Hello,

I am currently locked out of my Microsoft 365 tenant because multi-factor authentication is enforced, and I am unable to complete the verification process. I am the only global administrator for this tenant, which means I cannot access my account or the Microsoft 365 Admin Center.

To resolve this, I have created a new tenant and would like to be connected with the Data Protection Team to verify my identity and assist with regaining access. I am available to provide any required documentation or verification to support the recovery process."

Ticket Support: Log in the Microsoft 365 Admin Center using the newly created trial admin account > Support > Help & Support. You can raise support ticket at: https://admin.microsoft.com/#/support/requests   

• After completing the ticket information, you will receive an email appointment for a meeting to review this issue professionally together. 
• For more details, you could refer to this article: Get support for Microsoft 365 for business 

Please remember to cancel the trial subscription once your issue is resolved to avoid any unintended charges.

Once you have regained access to your original admin account, you could cancel your subscription via Microsoft 365 Admin Center.

Kindly let me know when there are updates or if you need further assistance. Any updates you’re able to share would be really helpful.

I'm here and happy to help! Thank you for your kindness and patience! 

If you have extra questions about this answer, please click "Comment". 

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