SMS received by redeeming traffic coupons

I met it before, and now it's solved. It is the traffic monitoring software in the mobile phone (whether it is 360 or any mobile phone housekeeper). There is an option to automatically correct the traffic used, just turn it off. Otherwise, this function will always send messages to 10086 in the background. 703 is the old code for querying the traffic usage of mobile companies. Now 703 has been changed to the code for redeeming points, so you have been receiving this message.