Insincere and hypocritical. totally a hypocrite. Acted like he had all privilege just because he is rich and he is the one paid the money. And you must serve him like a servant. As long as you have a small problem, he will report you no matter what.
You worked hard to help him solve the problem. He will thank you first. Then immediately write a horrible review for you. And complain you to Amazon behind your back.
Typical troublemaker customer. You can imagine If he goes to a restaurant, and the waiter accidentally gives him the wrong dish. When the waiter apologized in good faith, and gave him the right dish. He would say: “Oh, don't be sorry. Everyone makes mistakes. I won't blame you.” After he said these words, he would immediately call the owner of the restaurant and tell him that the waiter's service was extremely bad，not able to his job right and ask owner to fire that waiter right away.
I can smell how hypocritical he is through the screen.

Hello？ Being rich can help you buy something, but it can't help you get respected if you are an hypocrite.
Although he is a rich man, he is not worth your time to do business with him. He is arrogant and hypocritical. He will find a way to complain about you if he encounters any problems. You are not allowed to make any mistakes in front of him. If you make a mistake, you are junk in his eyes.

Don't think that he is your potential customer. If you do business with him, you may not get the money, but you will get a smear of your credibility.