How to cancel the ringtone of telecom?

According to the description of the problem, 1 and the edited short message 30 13 are sent to China Telecom's customer service number 1000 1, or you can call 10000 according to the voice prompt to unsubscribe, or you can turn to manual service to help unsubscribe. 2. Visit the online business hall of China Telecom, enter "self-service" or "my 189", log in and find "basic function/program control" and then "color ring back tone" to close. For more service benefits, click on "official website" customer service 402 below to answer your questions.