Checkers Xtra Savings False / misleading Advertsing

Checkers advertised their 550g Cape Culture Fresh Pies (chicken & mushroom and bobotie) for R 54.99 and R 54.54 respectively as the normal price, but if you have an Xtra Savings card, you could buy two for R 120.00. When I queried this, I got told that you had to buy one of the above mentioned and one of the more expensive pies like the pepper stake, then the saving would be applicable. This wasn't mentioned on the either of the stickers. I consider this as false advertising.