How should China Unicom charge the phone bill?

You should pay the money you should pay. Do you want to be kind? However, I tell you, don't worry, they scare you, only 167 yuan. If they really go to court to sue you, it would be a bit silly. The litigation cost is higher than that. Don't worry, even if you go to court, there is nothing to be afraid of. The worst result is to pay 167+50 legal fees. There used to be a telecom case like this. The telecommunication bureau calls home to collect money, and the frequency is a bit high. The user sued the court. Although you lost the case, after all, you owe money, but the court gave the telecommunications bureau a judicial proposal, suggesting to reduce the frequency. Try it if you have nothing to do, hehe, but the complete solution is to pay back the money. Of course, if you really don't owe money and can find evidence, you can sue him in turn.