Debit order reversal nightmare

Good day

I am not happy with the service FNB is giving me right now.Since month end of April, I have been trying to do a debit order reversal to no avail, and because it is over R200 i would either call customer care or go the branch, but all of them failed to help .the debit order option is not working, then when I get to the agent , they would say they are transfering me but it takes me back to the IVR lady , who says how can I help you. then I decided to go the branch and the lady who was assisting asked me to open my fnb app and then she went to the money assist option under the debit order i want to reverse,then she told me they will reverse it within 5 working days, 5 working days have passed, no word from fnb.the amounts are R250 and R388. Your assistance will be highly appreciated.

Regards Mokgaetsi