I want to handle the business of intercepting harassment information. It seems that China Telecom has a short message filtering service. How to apply?

It can be handled through online business hall, handheld business hall, SMS business hall and business hall. SMS filtering service mainly aims at spam or malicious SMS harassment and provides users with filtering means. After subscribing to this service, users can set the filtering conditions of short messages by number, time period and keywords, and the short messages that meet the filtering conditions will be automatically filtered out by the system. In this way, users can reject spam messages and avoid malicious harassment. Click on "official website" Customer Service 2 17 below for more service offers.