Called FCC 1-888-225-5322 and filed a report with them regarding this number. They say that with smart phones and apps generally available, anyone can do this. But if they get enough complaints about a number, they can investigate it.
Caller only played a recording of "Good Bye" after 5-10 seconds. Called number back to be told by a recording that the number was not a working number. FCC said this was likely spoofing.