False adverti*****t

i just went to, KFC at Randburg Square and purchased a Boxmaster, the purchase was done with my card and the cashier did not provide me with slip that confirms my order, while waiting for the order at the shop was empty, the is a clipboard that stated that if your order is given with no slip, your order is free and you should contact the manager immediately, which is what i did, to my shock in terms of the response and treatment i received when i told them that i didn't get the slip, where they just wanted to do a reprint of the slip, advised that's not what i want, but i want what u said on the clipboard about the meal being free, the manager ( Zanele ) stated that they need to look at the video tape as they cashier stated that they provided me with the slip, advised the manager that i will wait so they could verify. in took the 10-15 mins while waiting for them to check on the cameras if the slip was provided, they returned and told me that the camera recording does not want to rewind and they will call back tomorrow after they had a chance to view the recording, the manager than questioned/interrogated me, now begs the question, why do they place the such an instruction for c