Then there is no point in talking more - you have made enough attempts at talking. You are probably trying to tell them things that seem reasonable in your mind, but if their response is that he is crazy, then they confirm that they do not want to listen to any common sense-based arguments you might want to make. Their saying that he is crazy negates everything you have said, might have said, and may say in the future.

So you won't get anywhere from talking to them: they and you are using different languages, that may on the surface seem to both be English, but on a deeper level, are different.

That does not mean that they do not want the best for you - they might very well want the best for you.

The mother might also have a need to control your behavior, as yet a separate problem.