Absolutely disturbing behavior

I am not happy with the service I got at the kfc in wonderpark.The service is so pathetic. Firstly I got there and the was no one to take my order,I had to drive back and fourth only to be told that I have to wait for the chicken for about 20 min as it was not ready. As I was telling them how unhappy I was with their service.instead of them being unapologetic.some dark skinned lady with a bald head starts singing some song saying “even if I scream,nothing will change” I felt that was so disrespectful. If this is the kind of service she gives to every customer then KFC wonderpark will certainly lose customers.