Standard So unprofessional

So I called standard bank today because there is money that was refunded by my warranty to my vehicle finance account which was i had requested that it reduces my monthly installment. This was done in April and the amount reduced in April now in May it went back to the old installment. I was on the call first for 7 minutes before it cut off. then i called again after holding for about 20 minutes i finally got through. Told the consultant what my query was and she put me on hold for about 20 minutes to "process my request" then the call was dropped again. She did not call me back after that knowing how long i was on hold for. wasted my time and money. My number is *** just incase someone want to call me back from there. I've called so many time just to request about the warranty refund now i must follow up with them again.