Bad Service received at PEP Flora Centre

I purchased a few items on Friday, 8 September 2017 around 1pm. Shortly thereafter I realized that I took the incorrect size for one of the items. Around 3:10pm I went back to PEP in Flora Centre to exchange the item. I was the first person in line. The cashier was standing at the paypoint but only called me a few minutes later. I gave the till slip to her together with the bigger size item. She hardly made eye contact or acknowledge me as she was busy having conversations with her colleagues. She then gave the slip back to me and told me to write my details on the back, which I did. I then put it back on the counter, but she was still having conversations with her colleague and did not take the slip. After I while, I told her that I was in a hurry - she then asked for "authorization" and did something on the computer but then told me to go to the next teller. The next teller was busy folding clothes and continued with this without attending to me. By that time, I took the item and slip and left the shop. I am sure that you do have cctv in your shops - perhaps you can have a look at the camera footage and judge for yourself. I am very disappointed by the service received by the cashier in PEP Flora Centre.