Unprofessional and very rude

Worse cutomer service ever on the chat/watsap. I have been dealing with their agent lucinder mentoor 😌 I can't even begin to express her rudeness and unprofessional she is, she refused to give me her manager email address av been asking for 7 hours, this company should start employing professionals if I can show you the conversation it's a discrace, lady even went on to say it's non of her business I can't update my banking details online. Wow.. My request was straight en simple, I want to settle my debt av put on an arrangement but the card is incorrect I need to update the bank details can she remove the arrangement so I can re-arrange using a different card, she was so rude from the beginning of the chat as some point I will ask questions en she will respond with????? I mean what's that? Is this rily the type of agent you put in the front line to represent the company? She said to speak to the supervisor I must lodge a complaint. I arranged for a payment to go off by the 30th all I wanted wat to change card details an make a new arrangement. Tht lady is so unprofessional she even said she knsw how to swear back!!! Been on watsap for 20hrs no assistance, it's annoying