British Airways lack of care

Not sure what is wrong with BA. I fly BA regularly and more often than not their flights are delayed. Crowning glory was their 7.30am flight Cape Town to Johannesburg. We stand at the desk to board, at the desk are three staff happily chatting away. At 7.25 an irritated passenger asks why the delay. They did not know but seemed unconcerned that all the passengers are waiting. After a phone call to their supervisor we are told there is no pilot. Ultimately after boarding we are told that the crew arrived late last night and in terms of rules they could not arrive on time. If BA knew this last night why not SMs the delay or post on the boards that there would be a delay. Is this how they care for their passengers. BA great staff comfortable seats but don't seem to care about their passengers on the ground.