incorrect information

Hi, I contacted African Bank at the beginning of this month to let them know I had missed my debit orders due to some financial difficulties and asked to make an arrangement to make an extra payment just before the end of the month once i have set my budget. the consultant advised i make an additional R1000 for each of my loan accounts which i advised i am not certain about but he said i can change that before the debit order date. i have just contacted African Bank to cancel the arrangement as i can only pay the monthly installments but was advised that cannot be done, as once an arrangement is made it cannot be cancelled. this contradicts what i was told before. i Got ****** over a week ago and my bank account is already on a negative due to last months failed debit orders and the failed transactions the ******* caused when they kept trying to withdraw from my card. i cannot afford for any additional amounts to be deducted because the debit orders will fail and leave my bank account with a minus which will mean i cannot make an arrangement even month to make an additional contribution. debit orders are sent days prior to the debit order date so there really is not way its too late for me to cancel the arrangement.