Professor refuses letter of recommendation request
I am sorry for your situation, no one likes to feel under-appreciated. That being said, it is important to know which battles are worth picking. Your professor was very clear in his answer, and I can't see how can you (or anyone, for what's it worth) gain something pursuing this matter further. It would only create an unnecessary and tense atmosphere. You also said yourself that you do not want his LOR anymore. Let it go, and best of luck in the future.