Bad attitude need to be treated seriously

It was round about 16h00pm on Thursday when I went to the shop to purchase my groceries. I was in a queue having a nice chat with my cashier that was attending me. I did not see that I apparently touched Natasha's seat on the other side. The way she looked at me was unpleasant and arrogant and rude. Clueless and irritated as I was I asked her why is she giving me that look. she first ignored me and again I asked have I done something wrong why is she giving such an attitude. The response I got from her was that she was busy with another customer and I wondered if I was not a customer as well because she could have answered me and continued with another customer as I am a customer as well. I went to drop my groceries to the car and took a pen and pad. I asked the packer assisting her name as she was busy with the customer of her name. Saw her name tag and wrong it down. Whilst she was busy with the customer she responds \Yes. my name is Natasha and my surname is Ismail and this is my supervisor and manager! I did not ask her about all these details its her continuation of being rude. It also showed me that staff at Pick and Pay can be rude and hide behind their superiors. I just too"