Realizing that the laws in canada differ somewhat from the u.s., the office of consumer affairs might provide some assistance for you. There are certain exceptions to practices within each province. Most likely this debt will be turned over to a collection agency. If you contact the collection agency and explain that you do not have the means to pay this amount all at one time, they are likely to set up a repayment schedule that you could handle. Once you reach an agreement, be sure to get it in writing. Also make sure that you get a receipt for each payment.
I sense that this will all work out for you, just don’t allow anyone to intimidate you.
Best wishes,