Standard Bank Vehicle Finance - Inefficiencies resulting in financial implications to Customer

Standard Bank vehicle finance is constantly debiting my banking account in error with the incorrect debit order amount for my vehicle. On the 20th Jun 2022 upon receiving my vehicle statement, I noticed that my instalment was incorrectly amended. I contacted Standard Bank Asset and Vehicle Finance AVAF with regard to my monthly instalment that was incorrectly amended, the mistake was rectified. For the month of August/September 2022 my instalment went from R4589 to R5264 yet again in error. Can Standard Bank not rectify the constant error resulting in inconvenience and financial implications on the customer. This has now happened to me for the third time this year and I am really frustrated with Standard Bank. Due to Standard Bank Vehicle finance’s error on my debit order, I have to endure the consequence of paying an additional R675 on my monthly instalment due to the inefficiencies of Standard Bank AVAF rectifying the problem. Shocking service from a multinational corporate Bank, that the error cannot not be resolved and for the third time this year.