Fees taken and non usage of concessions

I have been utilising the Marianhill Toll for the past 16 months as I work in Hillcrest. Upon application of the Toll road card it was understanding that I would receive between 20 % -40% discount on fees , depending on the amount of trips made per month. <br> On the 19/01/16, I'd deposited R500 into my card . However when I swiped my card to go through, my card was rejected and I had to pay cash. <br> Upon querying what was going on, I was told that they had their systems upgraded in January 2015 and the new person that should have captured info , had not done so timeously. <br> I subsequently learnt from fellow colleagues that their monies too have been taken and they were told that they're in negative balances !!! No one is able to tell us where's our monies that were deposited nor are we given tangible reasons for our cards not being activated. <br> I was asked to leave contact details for the admin personnel to contact me and it's now almost a a week and a half with no response. <br> I can't understand why a systems error can only be picked up a yr later with no info from SANRAL to us commuters??<br> Whats happened to our deposits , sums of between R300 -R500???<br> No print out or explanation? ????