Wrong order given

The service we get at this branch its appauling, on more than one occassion I was given the wrong order. I went to buy a streetwise two and asked for a thigh and drumstick, the cashier screamed my order and it was packed, when I got home I realised that I was given the wrong pieces. I called the store and asked for the manager and explained what had happened. She gave the phone to the person responsible for the mistake and I just felt like they were not taking me seriously. The reason for the wrong order was that it was noisy and he couldn't hear the cashier. I don't understand how this is my problem and if they have a noise problem, can't they find another way of comunicating customer's orders? And shouldn't the manager attend to a complaint personally when I bring it to her attention? KFC has been followed by a lot of scandals lately and they should appreaciate the loyal people that still shop there despite of what we see in the media. The sevice level in Mayibuye is really low and someone needs to come in and assist with training ALL the staff members and more especially the manager on how to deal effectively with complaints because that is not a ****a shop.