Illegitimate Fees

I had scheduled a payment of R400 to be paid on 4 September 2020. I had about 3 x that amount in my account. So I received a notification on my cell that the payment had gone thru. However, I was charged R65.00 for "insufficient funds" when there was triple that amount in my account. I went to my local branch, stood there for almost 2 hours, only so she could log the error. I have to wait until the 15th September for a response. Never mind the fact that I need the R65.00 desperately. I am beyond livid that I am being ****med by this institution when I struggle to make ends meet. I am now more than ever, very keen to close all my existing accounts with Standard and move to their competitors. ****************