Professional arrogance

On 30 Sept 2015 around 11:00. I joined the atm queue with 2 people infront of me.The first person took his turn to use the atm, 2 nedbank staff members walked out from the branch with an entourage and joined from the front without saying a word to us waiting on the line. A lady waiting infront of me complained and said to them she needs to use the atm after the person she was following. Both employees allowed her to go through and do her business.After her, an employee whom I was told is spha mdunge went in and used the atm. When I asked the an employee by the name smah lushaba she told me to use the other atms on the side. When I asked her why is she not telling me what is happening, she told me that she is not allowed to go to the other atms as a staff member. In my conversation with her, I told her that it would have made sense if she addressed me before shouting at me.Then the guy named spha mdunge came to me and shouted at me and said there is a phone, I should contact the call centre.1.I experienced professional arrogance from the two nedbank employees and I felt like I was not an important customer.2.A white lady who was before me complained and she was shown respect