KFC fails to get my order correctly

Every week we order at KFC. This is the 3rd time they getting my order wrong after a long long day. The 1st two times I just lost my appetite and let it go. They keep on getting my chicken pieces wrong I ask them at the windows when collecting if the order is correct as I have a child with food aversion. I'm going to stop supporting you as we spend an aggregate of 1000 a month at KFC.