Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hi Qiang Xu1,
Thanks for using Microsoft products and posting in the community.
Understanding that you are currently trying to contact technical support, what problem are you currently experiencing that you can elaborate on? Is there anything I can help you with?
The following link is the phone number for global technical support, you can try to contact by phone.
Global Customer Service phone numbers - Microsoft Support
And you can contact technical support by following the steps below.
1.Visit this website: https://support.microsoft.com/en-us/home/contact
2.Type in your problems in the search box there. For instance, Contact, etc.
3.Now click Get help, and Select Contact Support below.
4.Go to the Products and services tab, and choose either Microsoft 365 and Office category or Other Products
5.On the Category tab, choose Technical support or other alternatives.
6.Go to Confirm.
7.You can now choose the option of Chat with a support agent on your web browser.
Thank you for your support and understanding. Have a nice day.
Best Regards,
Kiki.Z - MSFT | Microsoft Community Support Specialis