safair flight delay complaint

i had booked my uncle and step father i flight for the 2nd of June to fly from Capetown to Durban at 11h30. as me and my other family members were flying British airways at 12h00. the safair flight did not board until i had to board my flight and leave my family members waiting with no information being given to them by the boarding staff at gates. when my British airways flight was about to leave, my uncle advised me that they are being told the flight is technical and they will bring an aircraft form Johannesburg. i landed in Durban only to find that they are still stuck in cape town and the flight has not boarded. they were given R80 meal voucher. which is ridiculous. they only left cape town after 4pm and i had to drive back to the airport to come pick them up. i work for an airline and i find it very ridiculous that they will give passengers R80 meal voucher for a flight that is delayed for more then 4 hours. i called the call centre and the lady told me she is sorry, which does not help me in anyway. all those passenger were supposed to be compensated for the delay and not given a stupid R80 VOUCHER, which u can only use to buy coffee or a soft drink. i will be taking this up further until they do right by these passengers .