What should I do if I encounter such a situation at work?

If I am an account manager, oh, I am a manager, then I must be a subordinate who supports the practice of subordinates. This practice not only brings benefits to the company, but also protects customers. As a manager, I can't take such a strange statement because of this 400 yuan. This 400 yuan should not be deducted. If it were me, I would definitely give my subordinates some authority. Since you gave them permission, his permission is a list, and his decision-making power lies in the fact that there is no reason to refuse or break his word after the event.