Assistance for billing and subscription management issues is available online FixTechGuide support for Office 365 or by telephone during China business hours (Beijing Time), Monday through Friday. Billing and subscription management support can be accessed using the same phone number and online service request process as with technical support. The support telephone number can be found on the Microsoft 365 operated by 21Vianet portal. 2 Severity A is only available to customers who signed an advanced online service agreement with 21Vianet through a sales account manager. For billing and subscription management support, the highest severity level is B. Presales support for Microsoft 365 operated by 21Vianet provides assistance on subscription features and benefits, plan comparisons, pricing and licensing, and helps to identify the right solution to meet your business needs.

With Microsoft 365, you can designate several types of administrators who serve different functions.21Vianet customer service team follows up with investigation and customer communication in reasonable rhythm according to severity levels.For a smoother support experience, we recommend that you open separate support requests for each issue.It can also depend on if you want help for an issue with a service like OneDrive or Outlook.com, or help with Windows, but you don't have an existing Microsoft 365 subscription.If your country/region isn't listed, select a neighboring country/region or dial the United States support phone number.With every subscription of Microsoft 365 operated by 21Vianet, 21Vianet support provides technical, presales, billing, and subscription support.Issues that originate in customer networks fall outside of the Microsoft 365 support boundaries, and in these cases, customers must work with their networking team for assistance.21Vianet also expect customer to collaborate at reasonable level accordingly.
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In addition, presales support can help you find a Partner, and purchase and sign up for a trial. Presales support can be accessed using the same phone number as with technical support. Initial response time is based on the severity levels described in Technical support case handling.
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Sign up for a free trial of Business Standard for up to 25 users and experience how Microsoft 365 empowers your business to get more done from anywhere and helps keep data safe with built-in security. Find and edit files, scan documents, and create content on the go with access to Copilot Chat, productivity apps, and more — all in one place. The type of support Microsoft provides for consumers depends on the product you're calling about and if you have a product&nbsp