Originally Posted by
Wpgjetse
Go to the Bay or any other retailer, buy something with your discount coupon and return the item the next day. You don't get to use your discount coupon again. Why should airlines be different?
Not an appropriate comparison. The "discounts" are provided for entirely different reasons. The coupon from the Bay is for promotional reasons. A discount code issued by Air Canada is for compensatory purposes. The failure of Air Canada to honour its discount code allows the airline to avoid providing the compensation it has agreed to. A coupon from the Bay is not issued for compensatory purposes.
To the OP. Please contact Air Canada and ask for a reissue of the discount code. I believe that the airline will provide a new one as soon as the flight cancellation is processed.