What area are you in, if Vancouver there are a few wine stores called Liberty wines that stock Malbec from the Central valley and Maipo
Also from Canada itself there is a lovely Malbec from the Oki - what not - region produced by Sandhills luvverly.
http://www.libertywinemerchants.com/wines.html
they definitely had more Chilean stuff in the store when we visited.
May find something interesting about Chilean wines on here they are the body that represent them in London.
http://www.winesofchile.org/
http://en.wikipedia.org/wiki/Chilean_wine