I get calls from these morons all the time.  They work for Direct  or Dish TV and they say something like your TV system is being delivered today.  Press 1 to talk to an agent or 2 to opt out.  If you press 2 you get a full mailbox message.  If you press 1 and talk to someone they hang up on you if you ask to be removed from their list.  Then they keep calling back!  They never leave a message.  I guess next time I will give them a bunch of false info to mess with them.  I tried to call the number back, but it never goes through.