False Advertising

Very dissapointed about the false advertising, I was at a drive through at McD, on Beyers Naude opposite Cresta, and there was a poster about a instant reward when you upgrade a big mac meal. Long story short, I upgraded my meal only to find the person handing over the meal knows nothing about the competition in fact he actually said the competition was over. Driving back to work again I see another billboard about the same so called non-existent competition. not so impressed...