Extremely Poor Service - Had to Cancel Purchase

I have a clothing account at Ackermans. I wanted to make a purchase yesterday 30th April 2019 at John Craig in Vaal Mall with my Ackermans account. Upon paying an authorization was required. The cashier kept on telling me to check my phone for an sms which I did not receive. She then phoned for authorization and was assisted by a lady name BELLA. She requested to speak to me ans asked me a few questions which I answered. One of the questions she asked was for my cell phone number. She picked up that it has changed and I did not update it. I have been using my current no for over 2 years now I forgot I needed to update. My complaint is the lady's attitude and the manner she addressed me on. She was rude and bombastic telling me about my number I did bot update. I informed he I am not going to allow her to address me the way she was she is supposed to assist not to be rude. She carried on raising her voice. At this point the cashier took the phone and asked her to please assist her with the authorization. I could hear from were I was standing she was refusing. I told the cashier if she is refusing to assist you she must cancel the purchase she had already entered. I left the store without any assistance and purchase. The cashier was decent and tried to assist as much as she could. Please can the issue with Bella be addressed. You don't deal with costumers the way she did. She is ill mannered and extremely unprofessional.