I’ve rec’d four calls from the census even though I already filed. I just hang up.
My suggestion: Don’t try to explain anything. Just slam the door in their face.
I’ve gotten a visit and follow-up calls too. The guy is very polite, and seems to be very diligent, but not too bright. The gist of my interaction with him has been to tell him that I already sent in the form, and correctly indicated that no one lived here who isn’t counted at another residence. I gave him my phone number per his request, and he went away apparently satisfied, but then called me because he hadn’t gotten my name, which he needed to indicate the source of the information. This was about a month ago, and yesterday I get another call from the same guy saying he also needs to know the other address at which I’m actually being counted. Fair enough — that’s info I’ve already provided on my main census form, for the residence where I’m counted, but I can see that they want some way of cross-checking. But he doesn’t seem to be able to organize what information he needs to get before setting out to get it, so he ends up being told later that it’s incomplete and has to go back for more. When he called me yesterday, I immediately started to give him the address, but he had to stop me while he went to get something to write with/on. I really feel sorry for him — he’s pleasant and clearly trying to do a good job, but he’s also clearly pretty much unemployable for anything else in this economy.