Why can't Unicom's monthly messenger service be cancelled in the online business hall?

Possible reasons include: 1, abnormal mobile phone number status, expired shutdown, pre-sale, shutdown number protection or expiration, etc. , does not support business processing.

2. The missed messenger service is a necessary service in the package, and the cancellation of the necessary service is not supported.

3. To participate in relevant promotional activities, the missed messenger service needs to be bundled with the mobile phone number, and the bundled service does not support cancellation.

4. The online business hall system is busy, so you can apply for canceling the exam another time.