Penalty due to system fault with ABSA's debit orders

In April 2016 ABSA had a system error which caused all debit orders on savings accounts to be denied. I was in contact with ABSA about the situation and it was confirmed that literally thousands of customers had the same problem and that the error was indeed caused by an error on ABSA's side. Because of this error, I had to pay a penalty of R100 to Vodacom because my debit order was denied. I feel that ABSA should be held liable to pay this penalty and not I, as it was 100% ABSA's fault. However, I am not getting any positive response from ABSA about this situation. At branch level this matter cannot be rectified. It has to be done on a higher lever and unfortunately I cannot get access to anyone on a level that is able or willing to assist me.