15 times slower and poor service by Standard bank VAF

I app**** for vehicle finance on the 15th of May 2020. Finance was approved for R560 000 but my purchase was for a car priced at R150 000. All supporting documents were sent to the bank employee Nthabiseng N Tlhophane who was handling my application. I made follow ups using the Nthabiseng's email and no response was given. I decided to call the hotline and left a message for Nthabiseng to call me back. She did and explained that she was on sick leave so she couldn't expedite the process. Further documents were requested and furnished to the bank employee. When she went for a few days without any feedback, I made calls to the hotline to get her to call me back. Promises to call me back within 2 hours never happened. By this time she never returned my calls. I am getting no response to emails and no response to messages left for her by other bank employees to get Nthabiseng to call me back. I can easily get finance using agents at dealerships over a 24 hour period but the interest is pretty high with these agents. I am now feeling that Standard bank VAF is deliberately pushing me to the expensive dealerships. I have been with Standard bank for over 15 years and my credit record is squeaky clean. I get excellent service from Standard bank International Exchange department, credit card and the bank in general except now that I am dealing directly with the VAF department. Humbly get this matter sorted quickly VAF