BAD CUSTOMER SERVICE

I am really so disappointed with Standard Bank. Earlier this month I gave notice to the bank through the Prestige banking and VAF addresses that I have resigned from my employer and therefore need to change the debit date to the last day of the month since I have been advised by my company that while usually we get paid on the 23rd I will be paid on the last day. My request was on two vehicle finance and personal loan accounts since these are substantial. I was given a clear response that the debit dates will be changed to the 30th. However this has not been the case since today the debits went off causing much inconvenience. I have been with this bank for many years and I am really disappointed about the poor and *********** customer service. There are no funds in that account since I am only getting paid on the 30th, why would they not do what I asked them!!