DEBIT ORDER DOUBLE DEDUCTION OFF MY ACCOUNT

I have a personal loan with Nedbank and had arranged for a payment arrangement which was for an amount of R1,803.00 per month. The end of April came, and Nedbank deducted an amount of R3,008.00 from my account. The very next minute, they deducted another amount of R3,006.00 from my account for the same loan repayment. I have since lodged a number of complaints on their website, and via email. I did get a kind response from one of the Client Feedback consultants stating that he had reported my issue to the Personal Loans Complaints department and a consultant from that department would contact me shortly to make an alternative payment arrangement. He also stated that he had requested that my money be refunded accordingly. This email was received on 28/04/2016, and since that time not another person has contacted me regarding my payment arrangement, nor refunding of my money. I have explained that this extra money was not budgeted for and was needed urgently. I have also since kept sending emails to the gentleman who initially assisted me, as well as online and to the client feedback email address. How can Nedbank just leave people hanging like this when they clearly made a mistake and know this, yet they don't bother contacting you, let along refunding your money. I find this rather disgraceful for such a reputable bank, and would kindly request that urgent attention and resolution to my complaint is actioned with immediate effect. Whatever it takes. I want my money back please and now would be nice and a good time to refund me. Thank you.