Just got this number called while I was on second line. I saw name "Sales" on a display. Called back and computer voice said that it was a survey that expired. To be taken off the list I had to dial 1#.
Unfortunately, when you do that, they just bump you to a different number. They've been calling from many different numbers in that area... I can't seem to figure out how to get rid of it. If you pick up, and say nothing, the call terminates.