Terrible Customer Service

I went to buy food at chesa Nyama Windsor,when I got there the cashier named Lina was busy with a client which means I was the next client...Ok cool I stood on the Que,and Lina was done with the client and she just looked at me with a face full of bad attitude and then I asked \can I come through"and her response was \""can't you see that am done with him\"" and I was like why don't you say next customer and she said \""you could see that I was done with him so there was no need\""... Chesa please train your staff at Windsor east cresta"