Pathetic FNB service.

I requested a debit order to be reversed that wasnt supposed to be paid due to a Covid 19 payment holiday granted. I contacted my banker which instructed me to reverse the debit debit order by using the FNB app on my phone. According to the FNB App the reversal will be done withing 3 days. Nine days later and i am still waiting. In the meantime this is causing my account to be a mess.