Following the international reaction on Tuesday, Prime Minister Jacinda Ardern reaffirmed New Zealand's commitment to the Five Eyes.
On Wednesday, Mahuta supported this, saying Aotearoa would continue with the alliance "as we always have".
Du Plessis-Allan reminded Farage of the recent statements but he said New Zealand had betrayed the alliance.
"Have another think about what you've done to your friends and allies around the world," he said in the radio interview.
"You've thrown sand in our eyes and you've turned your back on the English-speaking world."
Farage wasn't the only former politician criticising New Zealand's relationship with China.
Former Australian Foreign Affairs Minister Alexander Downer said New Zealand had alienated itself with Mahuta's comments.
He said he believed New Zealand's weaker role meant the Five Eyes alliance was now more like a "Four eyes and a wink."