Why can't Unicom's business be cancelled?

In addition to mobile phone packages or services that must be opened after participating in activities, such as traffic packages, SMS packages, value-added services, etc., can be cancelled. You need to call 100 10 to ask the manual customer service to cancel the package overlay package such as traffic package. Log in to the online business hall and enter "Do business-handle new business-cancel business" to cancel the value-added business. If the cancellation of the online business hall fails or cannot be displayed, you can also call 10 10 to cancel the subscription to the manual customer service.