I got a message today around 4:22 pm. I called them back and it was a recorded message saying "press any digit to be put on the do not call list". I didn't press any digits because i don't want them to call me back.
Just a note, a do not call list is a list a company keeps (and supposedly a national list too although I am on it and still get several spam calls) of people they are legally obligated not to call again. It is one of the safeguards on consumer privacy. So if you push a button to be added to this list, you are saying you want them never to call you again, and legally they are obligated to respect your wishes from that point on. It is not a call-back list.