Why does my Unicom number receive multiple marketing recommendation messages?

If the user uploads the query code many times, that is, repeatedly query the phone bill, traffic, points and so on. He will receive a marketing recommendation message every time, but it will not cause too much harassment to users. The system is set to repeat at most two marketing recommendation short messages every day, that is, no matter how many times the user queries the uplink in 1 day, the uplink after the third time will no longer receive marketing recommendation short messages. However, it is not excluded that the platform is being upgraded, and this will not happen again in the future.