I won't pick up a call from a number I don't recognize. No message left. I would rule them out simply because if they're legitimate, then why not leave a message?

I got a call from (416) 964-2011 and asked my experience details and explained details about CIBC . but no response

Yes, received a call from this number, Randstad. Unsolicited call, asked to be removed from their database, I was asked why!? I said that I was at work, not interested, not looking for another position, they would keep insisting.SPAM.

who is calling

I got a missed call from this number. I called back twice, but no answers at all.

CNC Global

This is the outbound calling number for the Toronto offices of Randstad Canada (one of the world's largest job placement agencies).  If you have your resume on Monster, Workopolis, or applied to a company that uses Randstad as a recruiter (the Bog 6 Canadian banks for example) then there is the possibility that a recruiter from Randstad has contacted you about a position they see as a fit.Randstad CananadaSte 140060 Bloor Street WestToronto, OntarioM4W 3B8416-962-9262/1-+1 800-540-3594Randstad was previously known as CNC Global until the fall of 2007, and between 2007 and 2011, was known as Spherion.LLC** Workopolis keeps your resume/CV forever, so if you ever added it to their database, and never deleted it...it is still there.  Monster makes your resume unsearchable after 36 months of inactivity