Flights now shown as having departed Singapore for Bali as of twenty minutes ago. Still plenty of departures shown as cancelled later on.
People don't seem to understand that when a flight is cancelled it can't simply be laid on again the next day as aircraft and crews may not be available. Aircraft utilisation needs to be kept as high as possible and there may not be the capacity to pull extra flights out of the hat when needed.
The aircraft that was supposed to operate the cancelled flight more than likely just sat on the tarmac and the crew went home.