Wrong oders and incomplete orders

I have bad experience with KFC branches, they should review their staff in general cause they always give wrong oders and sometimes the oder is not complete. I went to kfc Northgate and bought box master meal and they gave me full loaded box, also alex mall I bought street wise 2pap and wings, they gave me pap without gravy and didnt bring the wings. I think something should be done about it cause its not olny this 2 branches but several branches,also kfc Marlboro does the same