We've finally gotten to the point where we don't even answer, we come here instead, type in the number, and see what comes up. Much more peaceful that way.
This is people with the last name Menhorn in Ohio, calling people on the phone with a recorded message concerning an unnamed credit card. Press 1 to speak with an agent. Once the real person answers, you've got a very short time to qualify as a gullible target for a con job, else he will hang up on you.