Called multiple times over past 4 days (I have a CA #), never left a message. They called 2 hours ago, and again 5 minutes ago. I answered and they asked for a "Tina" (not my name). Told them they had the wrong number, they apologized, and I blocked them.
Same here. Called twice in the last two days. The only reason I picked it up is that my daughter's college roommate is from DesMoines, and I thought perhaps she was trying to contact me for some reason. But dead air, as you said.
I've started getting calls from here after paying off my credit cards a few months back. I answered once and was silent. Now they're calling up to 5 times some days.