This requires you to go to the business hall and be queried by the salesperson on the mobile billing system. In general, it can be handled. On the mobile side, this situation is called reservation. In other words, if you can handle it, the phone bill you have refunded now can be refunded normally, and the phone bill refunded for new activities can not be refunded until your original 30 yuan is refunded. In other words, they are returned in order, not together. Specific to whether there is any conflict, you need to go to the business hall to inquire, because in the actual operation of the salesperson, it is found that there will be conflicts between some activities, while there will be no conflicts between some activities. Sometimes I don't know if there will be conflicts. The salesman will give you a try, but you can't do it. There are no certain rules, so the inquiry of the sales staff shall prevail.