Got this number calling today also. Maybe a virus in the original call system? I just save and log this, and others like it, as "Do Not Answer" in case they call again. Got ten DNAs now.
II did not recognize the number so I did not answer. I called this number back using *67. A recording picked up on the other end and stated "No one is able to take your call. Goodbye". It did not identify itself, and their phone system obviously did not like that my number was unattainable. Scammers.