Mr Port said people were also discovering their elderly relatives had not been able to make the change and he was also anticipating people would soon be returning to their baches for the summer and finding the televisions not working.
Alliance AV owner Todd Harding was experiencing similar volumes of calls about switching to digital TV.
"It has been fairly consistent, from leading up to the changeover to just the last week."
"In the last six weeks we have collected six months' worth of aerial antennas," he said.
He said those who had yet to make the change would find the picture and sound quality of the new digital service was worth the expense.
To those who had not changed their televisions yet he said, "just do it".
Going Digital national manager Greg Harford said at the start of November there was still 8500 homes that had yet to go digital.
He said there were targeted assistance packages to help people who hadn't yet made the switch to digital.