Try ICAS, I didn't go through them since I moved from uk and never needed them, that is off quick google search, I Have no clue what bachelor's of commerce would mean in Canadian education system, I don't have the access to pre arrival services anymore, so won't be able to suggest specific bodies, but those are two I looked at, I don't think they help you to get a job, they do prepare you for it though again that includes educational credentials assessment as well as language classes.
Best of luck