What if the phone bill is arbitrarily deducted?

Call customer service. He asked you what you downloaded, sent a text message or something, and you said no. Then he will report your situation. Customer service will call you in a day. When he asks you, you say you don't know. Nothing has been opened. Eventually, she will refund the phone bill. At first, he will only return you and deduct you. At this time, you said that it is necessary to change the rules and double the refund.