Wrong order, Bad attitude

Good day<br> <br> Last night I went to KFC in green point on my way home to get myself and a friend a bite to eat. I ordered 8 zinger wings as well as a box master meal which I made sure to mention that it shouldn't have the zinger fillet. The box master came with the zinger fillet. because of my medical condition I cant eat such strong food so I asked them to replace it with a normal fillet. They then promised they would do with but when I got the meal back, it was the same. I then requested a new box master, with a normal fillet again. This request was not well received, the cashier had the worst attitude about having to making a new meal, i then requested my money back as they could not seem to get my simple order right. I will NOT be going to this KFC again as they are rude and in capable of getting an order right.