Three hour flight delay

On Monday 17th August 2015, my wife and I were notified via SMS of a double delay on our flight from DBN to JHB. The flight was scheduled to leave DBN at 5:30pm however due to the delay, left at 08:30pm. <br> <br> Two issues:<br> 1) We were told at the counter that we will be compensated for our delay by the airline. We have not received any feedback from the airline.<br> <br> 2) We were given a R50 voucher at the check in counter and told that it could be used anywhere inside the terminal, however we were told by two restaurants (Fego and Alba Cafe), that they do not accept these, only after we had placed our orders.<br> <br> <br>