The Commerce Commission has once again delayed its final decision on how much Chorus can charge for access to its copper lines.
It is planning to make another draft decision in May next year, with a final decision in September.
Telecommunications commissioner Stephen Gale said the delay was in response to teleco companies asking for more time to make submissions.
"We've allowed an extra month for submissions, which means that we won't meet the April time for that final," he said.
Chorus chief executive Mark Ratcliffe said his company had not asked for extra time and was very frustrated by the further delay.
"That (the decision) shifted to April next year - now it has shifted to September next year. It just sort of seems endless," he said.