Missing word reminder, how to cancel, and how to charge after cancellation?

If you want to cancel the missed SMS reminder, you can do it through SMS channel, business hall, Huan go, 10000 and business hall, and the fee is 2 yuan/month. If it is cancelled in the current month, the product will become invalid immediately. The missed call reminder service is a short message reminder service provided by China Telecom for Tianyi mobile phone users. When the user turns off the phone, is not in the service area or the phone is busy and does not answer the call, the system will automatically send a short message to remind the user of the incoming call information. Applicable to China Telecom Tianyi mobile phone users who have not opened personal communication assistants (personal communication assistants have included the function of reminding missing messages). For more service benefits, click on "official website" customer service 220 below to answer your questions.