Bad attitude

I went to Mr Price in Springs, I store I hardly visit. I was looking for a pair of denim shorts which I could not find, I then asked the lady for a pair of high waist jeans. I asked specifically for a white pair which the lady who heads that department didn't have an issue with but when I got to the fitting room, Gugu asked that I try the jeans in a different colour. I initially didn't have an issue with that. But what upset me was that I could only find a 38 in a dark colour but not a 36. When I told Gugu that there was no 36 in a dark colour but I still would like to try the 36, that's when she told me that they don't allow people to try on white jeans because we leave them in a mess and it becomes their damage. Now my issue with this is the way she addressed it, as if it was my first day at Mr Price training. I then took the 38, really annoyed, I get to the change rooms and ask if I can go in, she still gives me attitude, rolls her eyes at me. I leave the fitting room after trying on the 38, she's telling her colleague that I got there n gave her a bad attitude. I then ask to speak to the manager, Lindiwe who tried to show Gugu why I was so upset, still she didn't get it.