Unhappy Customer Experience

If you only knew how I crave for Chicken Licken but the experience I got last time I bought at the Bara Branch in Soweto was not good. The thing is I'm big on Customer Service, so I never received a good Customer Service experience at the Branch in Soweto. I would not like to mention the Cashier's name as I don't want them fired but if Chicken Licken would improve on their Customer Service it would be, much appreciated. It's been now over 4 months since I bought a meal from Chicken Licken. I work at Southgate Mall and Chicken Licken is so close to where I work but after that experience I'm still sceptical of buying a Chicken Licken meal after the last meal I bought 4 months ago as mentioned.