Student loan repayment

I declared bankruptcy in June 2001 and I thought that my student loan was included as well. Recently I received a statement from Revenue Canada for payment on my student loan. As far as I understood the debt was cleared with the bankruptcy. Now six years later I have to pay my student loan and all the interest from the past six years. Since the time of my bankruptcy, I have not received anything regarding my student loan.
I would like to know why I was not informed that I still had to pay back my student loan, and who`s job was it to inform me that I still had to pay it?