Welcome, Strider.
Perhaps this will not be welcomed advice, but as a mother I can tell you that you sound as if you are speaking disrespectfully to your father.
Although I no longer am a JW, I reserve the right to worship as I choose. Your father deserves this right, also. He evidently does not want you to be constantly "at him" concerning JWs. Please calm down, and at a later time, perhaps you can have a respecful discussion with him.
Secondly, I certainly hope you do not pepper your discussion with the F word, as you are doing in your post. (see number three on the posting guidelines) You can verbalize your feelings and information without resorting to crass words that probably will not impress upon him your sincerety.