I called the number back and after a 10-second delay a recorded message states to leave your name and number and they will call you back. Not sure who "they" are but I left a message and my member and advised them we are on the national and state of WI do not call list, advised them not to call anymore.
I was on the phone when this call came in, and my caller ID just identified the number as 608-299-7575, which is close to the number of my insurance agent, to whom I had recently placed a call. So I called back and when a woman answered she said "This is Charlene, how can I help you?", which is not what an insurance business would say when answering a phone. So who knows what this is. I just hung up.