I would suggest that Australia send an urgent, composite team with substantial resources to assist, as the least we can do, as a nation with relative plenty.
Action is needed.
In the light of their sufferings, the funds presently devoted to political campaigning, at government expense, among other things, could be more usefully employed. If our own politics is so strife-torn and shortsighted we can hardly blame developing countries for messing it up. In the case of Bangladesh, the longer term troubles have led to silting up of the lower reaches of the Ganges and, currently, high tides have combined with heavy rains to exacerbate their already horrendous problems.