Odd experience at KFC Gardens.

I went to KFC Gardens for a small snack, and I asked for some sprinkle pops. This was fine, and then I asked for a diet coke. Three times I had to explain to the lady there what I wanted. She had no clue what diet coke was. KFC South Africa,please train your staff properly so that they know what diet coke is. I was about to walk out out of being angry and fed up. Come on, get with the program!!