Award-winning Australian filmmaker Robert Connolly, known for his work on The Slap and Paper Planes, has been the latest to struggle with connecting to the National Broadband Network.

When he returned from filming overseas in mid-2017 he found letters from several telecommunications companies in his letterbox, all telling him his Melbourne home was ready to connect to the NBN.

Robert Connolly started the process to get onto the NBN in late-2017. Credit:Chris Hopkins

Four months later, after months of slow internet and fruitless phonecalls, he is back on his old broadband connection.

"I’ve lost so much productivity ... I’ve been trying to work on a multi-million dollar film," he said.