I got call from this number at least once a day, a few days already

I just got a call from this number - they left a message. Live telephone conference invitation for Health Care in Barrie town hall? Pre-recorded message.

I have been receiving call from the number above, at night and day. what can i do.

I got a call from that number 705-481-1427 same thing when the machine picked up they just hang up, strange thing when I call the number back I get a recording (I assume from bell) saying "that number has not yet been assigned"