The service from Cathy was appualing

I came in Festival mall Foschini with the aim of paying my account around 12:50, then I noticed that there's an extra 25% off Sale. I then decided to shop on the sale items. Around 13:00 I stood on a queue, the counter had customers that where being served by 2 ladies. In-front of me there were 3-4 customers & behind me there was just 1 customer waiting to be served. Cathy finished serving the other customers that were in-front of me & then this other lady behind me went in-front without being called. I cautioned Cathy that I was long on the queue & that the lady was behind me. She then told me that the till she's operating is a jewellery till & she's serving jewellery customers only & she said this with an attitude, I was baffled as the customers that were in-front of me were not jewellery customers & were served. I'm very disappointed with how I was treated today by a person who gets paid by means of me the patron buying clothes from Foschini. I've been with Foschini since 1997 as a student card holder & I've never been disregarded the way I was today.