Very Bad Service from Nedbank

Dear Sir

I went to Nedbank to apply for a creditcard, i gave the consultantant my banking details details in order for them to deduct the paymnt on a monthly basis. She told me she did it. I went there after a month checking with them if its deducting and i fount 2 guys at the reception area and without checking on the system they both said its deduction because theres no way the consultant cant load a debit order. I then left the branch and i was shocked to receive a call from Nedbank credit card department telling me that my credit card is in areas. R950 has to be paid that week. I explained to them my situation and they said i can pay half of the amount and they will wave the penalties as it was not my fault. Then even gave me thier acc number to do a stop order frm my bank account. Supprisingly this month i got a call againg and i was told that my arears have added up. I dont know what to do. Please help