Anon97190: I am receiving the same kind of harassment on the part of a Census worker. I almost broke down and called him today to respond, but then read the posts on this site and decided not to. He called seven times and left voice mail messages (I have not returned them) and came by at the same time on different days and sat in his car in my driveway for a while and watched my house. He left a note once telling me I was "required" to speak with him. He also went to a neighbor's house to ask if I lived here. In addition I received a letter from the Census's "Regional Director" telling me I was "required" to complete the ACS.
At this point I'm unsure what to do. Frankly, I feel like I have a stalker! What's curious to me is how this guy got my name and phone number because I filled out the initial survey in the summer with only the number of people in my home. I live in a small town and I think he got my information from someone at the town office, but I can't prove it. I have to admit, this is really getting on my nerves and I hate hiding, but I guess unless I receive a notice about a fine, I'll continue to do what I'm doing.