Called twice in a row, back-to-back, 1-2 minutes apart around 5 PM.  I did not answer and they left no message.
But call originated from a VoIP - TextPlus New York, NY (Bellerose, Bronx, Brooklyn) phone system.  TextPlus is an app supported by iPhone, iPod touch and Android which allows users to send free unlimited group text messages.
So I suspect this was a SPAM robo-call text-messaging sales solicitation call.