The owner of Denture Professionals described his experience trying to connect to the network as “horrific”.
When he agreed to move over to it, his business lost its internet connection.
“I could not access my patient records for two weeks,” he said.
“I spent about 30 hours on the phone and spoke to 12 different people.
“On Wednesday I spent six hours on the phone and was on hold for 35 minutes at one stage.
“That took away business because I couldn’t see patients.”
Mr Duzevich said a podiatrist connected to his business was leaving due to the internet issues.
He said this would cost him $1200 a month in lost income.
Mr Duzevich was frustrated too because he was unable to go back to ADSL.
The problem was resolved last Wednesday.
“The box was put in the wrong spot and there was a connection issue,” Mr Duzevich said.
“But they didn’t do anything until I kicked up a stink.”
An NBN spokeswoman acknowledged there had been a delay in connecting the business to the network.
“However NBN is working with Telstra as a matter of priority to resolve any outstanding issues,” she said.
A Telstra spokesman said Telstra apologised to Mr Duzevich for the delay connecting to NBN.
“We are currently working with the customer to resolve any outstanding issues,” he said.