For the past 3 weeks have recieved calls from the above listed number 404-38-4561.  We are very concern because these are not just prank calls but are very obscene and graphic in nature.
  We have already notified law enforcement in our area and are now take other steps as well.

  Hope that this site will take this issue seriously.

You as well as everyone else that gets these fraudulent calls should report them to the appropriate authorities. Don't let these crooks abuse you. If I were you, I'd get a call blocker, block their numbers and report them.