Bad service

I bought a ticket to east London *** from Park Station for the 15th Dec. Got to the station at 17:30 for 18:00 @18:00 I asked the marshall if the bus had arrived only to be told the bus had left while I was standing in the queue. I went to the service desk to explain to them what had happened and they told me I must just buy another ticket or follow the bus. I'm disgusted by the level of service I received. I will never again travel with Intercape. I lost R1200 and had to make alternative arrangements to travel.