Hung up on me!

Calls at my place of business and hangs up when I answer

They have to give you the option to Opt-Out (usually at the end of the recording).  Press "2" anytime when the recording starts playing and it will disconnect you and should remove you from their call list.  We get several a day from various numbers and this usually works.  There are hundreds/thousands of these places - the way they get around the Do-Not-Call is that they give you an option to opt-out.

They call and hang up.  I called back today and but was directed to a voice mail where I could opt out.  Then I get a call from a different number that hangs up on me.

I keep getting calls from 240.491.9729 as well.  No messages are left.