Gautrain delay made me miss my flight

Today I got left by my flight because of Gautrain delay I got into the train at 5:30, arrived at O.r Tambo at 6:35 instead of 6:10. We were not told what was going on the securities inside the train said it might be maintenance cause they were also not told what was going on. I complained to their offices and supervisor told me that the only way of complaining is only via their website, I am still waiting for their response even now an stuck at the airport. This service is appalling.