Putrid service from Wesbank Motor Finance

Absolutely pathetic service or should I say lack thereof! Consultants are not even able to answer a simple question and dont even bother responding to my email where I clearly stated that I want a call back from a manager. On Saturday 15th Feb 2020 when I still did not receive a reply to my email sent on the 12th Feb, I decided to call. What a big mistake that was! The agent Damien just passed me on and offered me a supervisor to speak to when he couldnt answer my questions. Then the so called supervisor, named Roslyn, says she will try to call me back by the end of the day but they finish at 12pm so shes not sure. She agrees with me that the interest charges on my settlement doesnt make sense and will get an SME to assist. I then receive an email shortly after with just a template explaining how interest is calculated, but not my actual question, which is why is it that the settlement balance for less interest days is more than the interest charges in an entire statement period. Also my email response I received was just as pathetic and has lead to much frustration. I asked why is it that it is charged from the last debit order date to settlement date and not from statement date as all interest from debit order date to statement date should have been included in the statement. I again receive a generic response saying it is calculated from the last debit order date. No **** its calculated from that date, I already stated that which means I know this, my question is WHY??? All along I have not been disputing the way it's being calculated, just why it is more than it is for an entire month! I stated that I wanted to speak to a higher supervisor in my response on the 15th Feb, but to date being the 23rd Feb I have still not had a single response other than the generic email above! Tomorrow is the last day for settlement and I need to get this resolved ASAP because I refuse to pay any additional interest bec8of your lack of response! I also queried why is it that you are calculating the interest on 11.5% when I received an email on the 19 Jan 2020 that as of the 17 Jan 2020, the prime lending rate has been decreased to 9.75%. But again this is being totally overlooked and disregarded! Call me urgently with a satisfactory response and a way forward!