debit date not changed

south africa<br> i went to sandton city was assisted my lehlohonolo if i am not mistaken,i went there early this month to change my debit dte since im getting paid on the 7th every month to my surprise i got sms debit order bounced for my petrol card and bank charges,i am sick to death of fnb treatment yet we pay lot of money for bank charges please sort this mess up then when you done i need to go to absa or capitec ,i pay 150 for bank charges will spend only 20 on other banks and get better service so urttelly disgusted <br>