Standard Bank Lost Me R7600

On the 24th of February I went to Standard Bank Brooklyn to create a stop order payment, which was to be made on the 25th of every month. The bank teller informed me that it would not be possible to process the payment for the month of February as the system needs at least three days after the stop order is created to process any payment. I instructed him to make the stop order effective from March and that I would make the payment manually for the month of February. I went back to the office and processed an EFT payment. On the 26th of March, I woke up to an sms informing me that a stop order payment had been made, same payment I had already made via EFT. I called Standard Bank call centre and was told I would need to go to the branch. I went to the branch and, two hours later, was told they could not reverse the payment. Some lady came to explain that their system has changed and now it takes 24hours to process payments. I went back to the same branch on Saturday the 19th of March and requested to speak to the manager who promised to look into the matter and revert. I still haven't heard from him up to today. I have lost R7600 because of the ineptitude of Standard Bank.