Last census time I got stuck with a long-form. The census workers were persistent in gathering their information. One finally “caught” me at my front door. Don't know if she was sitting near by waiting or what? I am glad the census taker was a female. If it had been a male, he might have been shot by startling me at the front door like that. I have been violated in a similar manner and admittedly suffer with a bit of PTSD for that type of situation.
So, her and I played the cat and mouse game of questions. I told her I wasn't going to answer anything I didn't feel I needed too. I told her one of two answers at the time:
1. Refuse to answer the question.
2. The information sought is already publicly available.
PS. We stood outside to answer them. She was not permitted any access to inside my home.