My student visa got rejected twice so far. One for Humber college and another for Thompson river university and the Humber rejection had the same reason as yours.
As for Thompson rivers, they had said my document lacked authenticity which makes no sense because every thing I gave was truthful.
Its been a year since my last visa rejection and I am going to apply for the Capis notes directly from CIC through some one in Canada.
You can try these guys - http://www.caips.ca or if you have a contact in Canada like me, you can try http://www.cic.gc.ca/english/department/atip/requests-atip.asp
May be you should look into that obtaining the notes first, so that you can determine more specifically why your visa was rejected. Don't jump into re reapplying for visa with out understanding why it was rejected. The agencies will try to push you into re applying like they did for me and it was rejected again and they now simply washed their hands off and you would be left with a even more complicated case.