How to return those messy packages of China Mobile?

Hello, you can try sending a short message from 0000 to 10086 and follow the message prompts. If you can't cancel, you can call 10086 directly and ask the staff to check it for you. At the same time, the package cannot be cancelled, but it can be changed, that is, you can choose to reduce or increase the package fee, and the corresponding minutes and traffic will be less.