Nedbank must be the most inefficient bank of all

This morning I went to draw money at the ATM in Westville Mall. 1st ATM - Transaction cancelled. 2nd ATM - Transaction cancelled (Security Guard witnessed that no monies were received by myself). Went to lady at front desk and was told to go to inquiries. Stood in queue. Front lady came and told me ATM had just given money to someone and I was to try again. This time I got a slip saying 'Current Balance - R0.00!!!! Well I flipped and started complaining loudly. The front lady then downloaded a statement which indicated that I HAD DRAWN R500!!!! Thank God for the Security Guard who verified that I had NOT received any monies from the ATM. I was then taken to another lady who did an inquiry. She then told me that the bank would have to check the machines. To my mind - in spite of my telling them what had happened AND having a witness) - they were telling me that they didn't believe me. I was also told that it would take between 3 to 4 days for this matter to be rectified!!! WILL I NOW HAVE TO PAY FOR THE CARD FEES FOR THE ATM MISTAKE? Why must it take so long????