There's no clearer sign that the Turnbull government is in deep political trouble than the never-ending saga of the Centrelink robo-debt stuff-up.

A well-functioning government would have closed down the controversy more than a month ago. If the relevant senior or junior minister hadn't had the wit to do it himself, the Prime Minister would have told him to.

Instead, the controversy's been allowed to roll on, while the junior minister, Alan Tudge, and more particularly the man allowing himself to be described as general manager of Centrelink, Hank Jongen, have repeatedly denied that there's any problem with the automated debt recovery system that's been making life miserable for many Centrelink "customers", including many who, in truth, owe the government nothing.

To broaden the focus, this is the story of how a highly class-conscious government – which sides with the well-off "lifters" against the less fortunate "leaners" – has come adrift from political reality and is using and abusing its public servants to prosecute its war on those unfortunate enough to need to deal with Centrelink.