KFC worker Misbehave towards customer

KFC worker fight with customer in I-City...the customer were waited for more than 1 hour but when comes to his turn, there is NO MORE fried chicken for him... the customer request the management to apologize but the useless Store Manager doing nothing instead the worker shouted at customer - "kalau mau makan, buat sendiri lah BABI
which means " If you want to eat, cook it by yourself PIG "


This is how a worker should behave towards a customer??? A worker always should be in control and patient state even the fault was at the customer. If he can't control, then he should have join in public or customer associated jobs like one as KFC. Now the worker really needs to apologise to the customer for putting his hand on him.