I am a freight broker. My customer recently, stop giving freight. The main reason was, the account executive involved his personal interest in my business, and I refused his requirements. Other than that, we made zero mistake and always offered very good services with best price. Recently, I want to communicate with him, but he doe snot want to communicate. He only said, if I don't give you freight , you can't do anything about your business. So, should I talk this to his supervisor or his manager about his personal interest in my business. One more thing, he is a kind of supervisor, if I talk to his manager about him, he would probably permanently stop giving the freight. So, what should I do? If i don't report, we invested a lot of money in order to do business with him, and did nothing wrong in the past. So what should I do? This is a Japanese company.