Misleading Advertising

I presented a completed loyalty card to claim a free smoothie. The card had 10 blue stickers and 2 brown. Jenny the manager refused to honour it. I explained that sometimes kauai branches run out of blue stickers and give brown. This is clearly an internal kauai failure and should not negatively impact on a loyal customer. Jenny was not interested and said that never happened at her perfect branch. I explained that her attitude was poor and not customer oriented at all. This behaviour from kauai is very short sighted. Is business really so good in SA that you can