They called a few days ago and I did their survey, although I knew better. Then they said they'd call back if we won their prize. I told them do not call back again and now they are calling twice a day. I'm sure they're calling because we're the lucky winners… yeah, sure we are.
Called the number back, did reach someone. Asked to be removed from their calling list and was told that they did remove my number.
I asked why they called and said that they had a 30 second survey about air quality in my area.