Nedbank Put through Debit Order Twice

After making an arrangement with the banks homeloans division they have put through my monthy debit order twice, The bank confirms that it was a mistake however I am not able to get them to reverse the transaction.<br> <br> I am left with no money in my account and run the risk of loosing my job due to not being able to put petrol in my car. Attempts to get the matter resolved have fallen on deaf ears. It has been 4 days with still no joy :(