THE WORST CUSTOMER SERVICE I'VE EVER EXPERIENVED FROM CAPITEC

So today I decide to go and change my daughter's contact numbers on her account because she is still under age and we are not receiving any SMS when money is paid into her account. I went to capitec Mabopane square and was called by Sibongile and I explained to her what I needed to do and she told me what she needed from me which I didn't have because I went to another branch before and was assisted without any hassle even though I didn't have any hassle, So I tell her to leave everything I'll go to another branch maybe I'll get better service there and she raises her voice and starts telling me that she's been working for capitec bank for 10 years and she knows what she's doing its fine if I go to the other branch all this time raising her voice so I decide to leave when I am at the door she screams , go well mam in a funny tone with a bit of attitude which I don't appreciate. So my issue here is this its okay for a consultant to correct a client but it should be done in a professional and respectful manner not to scream to a client as if we are at a shebeen, I just hope this Sibongile is taken to customer service training because its clear that the 10years she has worked for capitec she hasn't learnt how to treat a customer.