In a cost-of-living crisis, businesses would expect some bills to be paid late. But an outstanding invoice to a multibillionaire Rich Lister and heir to one of Australia’s biggest real estate empires? It’s a rather embarrassing oversight by Tim Roberts.

Perth-based commercial shutter door company Anvil Doors lobbed a default notice against WGPL Constructions, the holding company for Roberts’ family office, Warburton Group, for $6398.