I had the same experience. Got a call from this number, no message. When I called it back I got a recording that said 'Please press any number to be removed from this list.' That was all...no company name or further information.
Just received a call from the number on my work line. The caller ID shows as "INS Benefits" and was a robo call. Press 1 to speak to someone or press 9 to be removed. Glad I let this one go to voice mail.