Bad Service

I am a Nedbank client with Greenbacks rewards. I app**** for Greenbacks Shop Card: 1. I called the call centre to apply, I was told it would take 5-7 working days to be delivered to my branch in Menlyn. After waiting with no notification. 2. I went to the Branch in Menlyn to be told it does not show that I app**** for the said card. The gentleman who was helping me app**** and told me it takes 3 - 5 working days for the card to be delivered. That was omn 06 May 2019. 3. Today 18 May 2019, I went again to the branch to enquire only to receive such horrible service from the Teller Tumisang who was serving in counter9. She told me to go back and just wait indefinitely for the sms to be sent to me as it just shows ordered on the system. I told her that was not good enough. She told me if I want to speak to the Supervisor she can call the Supervisor. I then said sure, please call the Supervisor. The supervisor Esther Ramorolana came wearing Tumisang's name tag....I was horrified. She had the worst attitude ever, I had to tell her that I didn't come there to have an argument, what I want to know is what process do I need to follow to get this done. She asked me how should she know...Really Nedbank? She did not know that I know who she is with the wrong name tag....what a *****