Same thing occurs on a daily basis, around noon. I've kept one of their messages and plan to file a report with the Canadian Anti-Fraud Centre (CAFC).
http://www.antifraudcentre-centreantifraude.ca/english/home.html

received automated message from 1 866 284 7413 asking me to return their call. message stated they had a file about a personal matter concerning me. they do not appear to know my name. seems like a con to me. i didn't call back.