Claims to be a college students doing a survey for a grade, really?! Nonetheless, a survey after 8pm Central time. We have an unlisted number that we pay a lot of money to have unlisted (hubby is a police officer, this use to be a courtesy to law enforcement but no longer).
This number keeps calling multiple times a day at both my home number and the home where I work. It never leaves any message and I suspect it might be political as it started as the state candidates for Senate are ramping up their campaigns. I never answer at home if I don't know the number and at the work number it calls when I am not there.