No humans work at FNB

I have been trying for two days to change my debit order date on multiple products that I have with FNB. Each department needs to be phoned separately but all of them get answered by the same answering machine. When replying to machine what I would like to do "change debit order date" I get two options 'Reverse Debit Order' or 'Stop Debit Order'. I cannot get through to speak to a human on any FNB number. I have typed in my ID number at least 10 times. I have never been so frustrated. What do I do wait for the debit orders to bounce to get a phone call and affect my credit rating. Does FNB not want their money?