How to improve the star rating of China Mobile customers?

Star-rated customer credit service is based on customer brand, Internet age, average monthly consumption, available agreements, overdue downtime, application downtime days, and accuracy of customer basic information. To realize the dynamic evaluation and calculation of the credit rating of individual customers. Customers with different star ratings can enjoy different telephone overdraft limits and slow stop services. Customer credit rating * * * is divided into five grades; From high to low, it is 5 stars, 4 stars, 3 stars, 2 stars, 1 star.