How to cancel Unicom's call assistant by SMS?

Unicom's call assistant is a local service in Zhejiang, and the "call assistant" service is a missed call reminder service independently developed by Unicom. After the user opens the "Call Assistant" service, the system will record the missed call information caused by the user's power off or inconvenient to answer, and inform the user in the form of SMS after the power on.

Business application: send 580 1 to10011;

Service cancellation: send 5800 to10011;