disappointed

I am very disappointed with kfc ulundi. I purchased a meal there and asked for sprite to go with the meal. Instead of being given sprite i was given something simiar to sprite. When i tasted it i could taste that the liquid was not sprite. I then went back to the shop and asked the lady to taste it and he did. After tasting it she went and threw it away and said sorry. Really? Sorry. I don't wven know what i drank and she says sorry. I demand something be done about this as i am on my way to the doctors as we speak. Worst part is its a public holiday.