Debit order reversal

I have been trying to reverse a debit order on my gold account from Thursday, I called the call centre and the customer representatives pushed me from pillar to post for 2 hours and eventually a rude consultant told me that they don't assist with debit order reversals since beginning of April 2020. Please can somebody urgently assist me. I have tried disputing on the fnb app but it says that I need to contact the branch.