INCORRECT ORDER!!!

Last night me and my partner went to KFC kempton gate, we placed our order at 21:37 PM, we ordered streetwise 2 chips, 4 dunked wings,4 zinger wings and a sweet chilli wrap meal. To our suprise when we got home there were no zinger wings, instead we were given a piece of chicken, ONE PIECE OF CHICKEN in place of the zinger wings. Why make us pay for something that they don't have and give us a piece of chicken?! So we bought a piece of chicken for R42. This is completely unacceptable and *********, I would like to have this issue rectified.