BP 100 Limited Edition collectable

We have participated in the promotion to swipe your card for more than R600 at the fuel station and get a formula 1 car. R12,000 and 8 swipes later, still no code. After phoning day in and day out, we are told there is a glitch in the system. Yet we know of so many others that do get the codes/cars. After spending so much money and still no cars, very dissapointing! we feel *******!