Bumped off flight by IT Failure

Booked on 9.35 flight BA331Cape Town /Durban.Checked in (am to be told two of us had been removed from passenger list inexplicably .Purser contacted Flight Centre Emergency no.There was time to reinstate us on flight,seats available.Gate held open extra 10 minutes.Flight Centre failed to do this .was told Manager ,Zena would ring Monday!!! Got her to ring immediately .They booked us on the 17.35 flight a wait of & hrs!!!! and offered 500 R.We spent more than that waiting.She also admitted that same happened \days before so they had prior knowledge and had done nothing.She also stated to pay any more than 500r would affect staff commissionas would be coming out their pockets.So Staff Commission is more important than Customer Service.<br> All the above has been admitted by Flight Centre but they refuse to increase offer and 500R is full and final settlement .This is a Company that fails to take responsibility