A dry half- full twister!

i went to KFC about 19.40 to buy myself a Hawain twister.When i get to the office the twister is so dry an literally 2/3rds of the twister wrap.i tell myself that i have bought this before at other KFC's and somehow they understand that i must get what i paid for but this KFC literally robs a person. I go back @ about 22.40 to show the Manager my problem, she tells me there's nothing wrong with it and i ask her to look clearly and she tells me that i can see that its very little stuffing inside.She tells me that let me give you your money back and then changes her mind to offer to make me another one. I say ok cause im really hungry. She comes back with another twister done the same way and tells me she doesn't know what i want. I make an example that when you go buy bread, you don't expect when you get home that there is a big whole inside where as you paid for a full loaf. She opens it infront of customers and i literally tell her that its embarrassing what shes doing and that it gives KFC a bad look, she just goes and opens it and asks me what do you think is missing here!.Please,train your Managers to understand what Customer Service is, this lady clearly doesnt