Same here. Nobody there when I picked up and said "hello". Caller ID said Valentine NE. I have a scary ex in that area, but I doubt he's making collection or scam calls.
I also received a call from this number, and nobody was there when I answered. I called the number back and immediately spoke with a very nice gentleman, from Mediacom, who offered me HBO for half price for one year. When I told him I wasn't interested, he was very polite and thanked me for my time.