sounds like a real person but it's all automated. annyoing it sounds like no one is there for a minute then it comes on the line, so if you just pick up and hang up that will solve the phone ringing and interrupting your day.
I've been getting a number of these calls. Sometimes says "The Breast Cancer" or 608-807-5992. They never leave a message. I answered once, no one there. I seem to get 2 per day when I get them. The latest was 8:30pm. Not appreciated as I have school aged children.