Nedbank Greenbacks ****ming client

I have a Nedbank Greenbacks account linked to my credit card. I attempted to draw cash from the Greenbacks cards and it was declined twice. The 3rd attempt on another atm was successful. However 1 of the unsuccessful attempts was processed as a withdrawal. I got the text immediately , so I went into the Kenilworth branch and after sitting there for 30 mins i was “assisted” and assured that it would be sorted out . It was not , i called the call center only to be transferred from pillar to post , eventually i spoke to some who took down the details of the incident. Still the money processed as a withdrawal has not been returned. I called in again , again being transferred from pillar to post. Eventually managed to explain the incident to 2 different people who were supposed to return my call . But did not . Basically Nedbank has ****** R1000 from me and their system is so inefficient or deliberately inefficient as to tire the client out. Its ridiculous that the glitch is on their side and that they have made no contact with me . Greenbacks is apparently unreachable. This has been a shocking experience. They are ****s at another level and their staff both *********** and inefficient.