double debit on my account

On 02/10/2015 Ned Bank debited my cheque account with an amount of R1472.66 .I went the KwaMnyandu branch Umlazi to query i spoke to guy called Lebogan over the phone who said he was dealing with my account .I asked him to reverse this amount since they have debited my account on 25/9/2015 r2568.68 normal installment and R320.00 arrangement towards my arrears. Lebogang said he can not reverse the amount until i give him improved arrears installment ,i said to him this what i can afford to pay and i have honored my installments and arrangement towards arrears monthly . He could not help me and i am left with no transport fees to work and also my children to school for October 2015 month. Please i need the amount reversed .