What should I do if my mobile phone is charged for no reason?

Contact customer service. Then wait for the other party to tell you the reason for their prevarication, and then forcefully say that you are going to court to sue them.

Generally after this step, the other party will tell you that they will handle the issue internally and ask you to wait for a few days. The person in charge will call and talk to you in a few days. Don't let go and stick to your claim principles.

In the end they will definitely refund you the full amount.

I have many such examples here. Sometimes you don’t even have to wait, the other party’s customer service will help you refund the money right away. This kind of trick to swindle money, the business office is only soft tofu. If you are tough, the operator will definitely not want to make this matter a big deal.

You heard me right.