Health insurance scam. Here's the message they leave: "This is a critical message regarding health insurance nationwide. With no major changes coming to the Affordable Care Act this year, this is your last opportunity to get affordable coverage. If you've not yet taken care of all of your insurance needs for 2017, we can help. To speak with a licensed enrollment specialist in your area, press one now. If you feel this message has reached you in error, please press two to be removed from our list."
Pressing two doesn't remove your number from the calling list. Instead, it makes your number more likely to be sold to other scammers, because it proves that you will respond to calls from numbers you don't recognize and will follow directions from people you don't know.