What about China Mobile's arbitrary deduction?

In view of the differences in business rules and tariffs among provinces, you can call local 10086 to get more help manually. You can also log in to China Mobile official website, and click "Telephone Fee Inquiry"-"Bill Inquiry" or "Bill Details Inquiry" on the right to inquire about your consumption. If you have any questions about these fees, you can contact the local manual customer service for feedback and verification.