Disgusting Customer Service

Called through to the Johannesburg contact centre to enquire about the discount that's given when one's debit order is through Capitec as I had seen the advert when I was at the bank. I had to repeat myself numerous times after that I was informed that there's no discount, due to level of incompetence from the agent I asked to speak to a manager of which I waited on the line for over 10 minutes I could hear the agent talking about me in Zulu and I understood everything since I also speak Zulu, the phone was then put down on me