The validity period of star customers?

Hello, the star rating of China Telecom customers is mainly divided into 7 grades, and the validity period of telecom star rating is 12 months. If the customer's star rating changes during the validity period, the validity period will be recalculated from the month when the star rating changes. In order to protect the rights and interests of star-rated customers, the principle of high will be adopted during the validity period, and the star rating of customers will only rise and not fall. For more service offers, please pay attention to the official account of "Anhui Telecom" WeChat.