Unicom 3g traffic has no SMS reminder? What to do and how to operate it?

Hello, Unicom user package traffic has been used up, and the traffic is reminded by day, week and month. Users need to order, and the default traffic is reminded weekly. At present, only the main packages have real-time SMS reminders, including 4G integrated packages, 4G free combination packages, campus-specific and other main packages. If the user does not receive the SMS reminder, he can give feedback through the online business hall, mobile phone business hall and manual service, and the staff will definitely check and handle it.