They have been after me. This was about 20-21 years ago. I was polite. I evaded answering questions I did not want to answer. My minor child was still exposed to JW indoctrination. I went to meetings in order to see her and so that my ex would think I was still "interested in the truth." I did what I felt I had to do at the time.
If they were after me now, I would keep a recording device loaded at all times, get down every filthy word they said. I would not meet with them without independent witnesses and/or an attorney. If they kept harassing me, I would file charges. I would tell them that there is nothing regarding me that is any of their business. If they wouldn't go away, I would call the police.