Safair airlines

On 06/02 I had a scheduled flight for 11:20am to Durban. My sister & I who are both pensioners were going to attend a family funeral, we arrived 5 mins late @ the “check in” and were refused access. We had to book for the next flight which cost us R750/each. If it was @ the boarding gate I could understand, but this was check in. I have travelled with Safair before & have experienced flight delays. We had to wait till 3:20pm for the next flight, there was a delay at the boarding gate and then once on board they announced a 10 min delay and then a further 20 min delay. My point is we the customers have to accept long periods of delay from Safair, but Safair could not accommodate me the (SASSA) pensioner that was 5 x mins late to check in due to traffic.