False promises and no feedback

The whole situation started when I made a call to the Standard Bank Vehicle financing department call centre and I was answered by a lady by the name of Wendy on the 04/12/2015 and I requested that my debit order date for vehicle account: SBSA VAF *** be changed from the 25th of every month to month end as I was changing jobs. She then agreed and informed me that everything is done and my debit order is changed to my proposed date and she gave me a reference number only to find our that nothing has been done when I called back on the 30/12/2016 as a deduction was made on the 27 since it could not be done on the 25th since its Christmas. I then spoke to Esther Strachan who promised me that now it done and she will speak to her manager about my situation as a fee of R60.58 was deducted for overdraft feed and interest on overdraft and interest on debit since I did not have an overdraft on my account and my account was impacted negatively with regards to standard bank not doing their job. Now I was promised that I will receive my refund and an apology letter from Standard and that was promised to me by Esther Strachan and Levi van Den Berg but I have not received until today.