False advertising off Pizza special and free 1.5L Cola

Today we paid for 2 pizza specials online, advertised as R99 with free 1.5L Coke worth R15. So, we went to collect instead at only outlet PMB Midlands Mall. Sorry no 1.5 L cooldrinks available. Few people didn't take it well and complained. We took our 2 lots pizzas minus 2 free cool drinks. Here is the thing Pizza Hut Pmburg, I am naming and shaming you. Not that I am desperate, BUT the customer is King. Your shop is in a mall, for goodness sake, they could have taken a walk to ShopRite and purchased the cokes. This is wrong and False advertising. Me, you won't see again... You know why... Had your staff said - sorry, no stock, but we'll note your name and number for next time, but nothing...