From the start, Australia’s National Broadband Network was billed as a game changer that would future proof the nation by delivering super fast internet services. Almost a decade on from those promises, there’s a growing number of angry residential customers and small businesses who are bitterly disappointed with the NBN. On Monday night, as the NBN reaches a milestone, passing the half-way point in its rollout, Four Corners investigates the problems fuelling this dissatisfaction.