Bad service

U have been to Nedbank on the 16.03. 2022 at around 9:30 to 11:00 and just to go and get a stamp that proof that I'm not a Nedbank customer. I had asked 2 of the consultants to help me since they were just sitting on their chair and doing nothing and all of them said I have to do to the tellers they will help me there. I was so surprised because all the people who came in were doing Thier business if depositing and opening accounts and etc,but with me it was a different story. I got disappointed in the service I got. Can the process be change as it looks bad for the business