poor custormer service

As a Sterns account holder, I have never experienced what I experienced at the Menlyn branch. A few weeks ago I went there to purchase the new blue Guess watch. When I was at the store asking for the watch a lady working there told me that it was out of stock. I then asked her to check for me on the system at which branch I could find it. I was shocked by this lady when she said I must give her the code of the watch so that she can check for me. Then I showed her the watch as it was displayed on a picture on the wall inside the store. She still insisted that I go and get the code for the watch. I didn't know where to find the code as I am only a customer at that store and have no idea where the codes are kept in the store. The lady didn't have a name tag, did not introduce herself and I waited for her for quiet a while to assist me.