Getting Out Of a Car Deal in Ontario?

I recently agreed to buy a car from a ford dealership but found out I was layed off from my job and can't buy it anymore. Everything has been done over the phone and I have not signed any binding contracts, I have not signed a single paper. The only thing I gave the salesman was my credit card to take a $2000 deposit. The dealership is telling me that I can't back out as they have already liscenced the car in my name and now they want a letterhead from the company saying i am actually layed off. Do I have to give them this by law and if I never signed anything, isn't my right to leave the deal although I might not get my deposit back?

via ehMac.ca http://ift.tt/1tjgxe8