After finding the Kiis network repeatedly broadcast “vulgar” and “deeply offensive” content, the Australian Communications and Media Authority (Acma) is bringing out the big guns against the Kyle & Jackie O Show.

Acma on Wednesday published a notice of intention to impose an additional licence condition on Kiis, a regulatory tool not imposed on a licensee since 2Day FM’s infamous royal hoax call in 2012 to a London hospital where Kate Middleton was a patient.

Last month, an investigation found a total of seven breaches of decency rules as well as breaches of the complaint handling rules across Sydney’s Kiis 106.5 and Melbourne’s Kiis 101.1, owned by the Australian Radio Network (ARN).

The licence condition is that for five years the program must comply with the commercial radio code of practice and must not broadcast content “which is highly offensive to an ordinary reasonable listener or which contains strong and explicit sexual references”.

ARN, which has 21 days to respond, is also required to commission an independent audit of the media company’s governance framework within six months and implement the recommendations.

Acma’s decision comes as the show has faced scrutiny over the past year in Senate estimates and through a Guardian Australia investigation.

In March, Acma found Sandilands and Jackie O breached decency rules by broadcasting explicit sexual content, which included “sustained and vulgar graphic sexualised descriptions” which were a breach of broadcasting standards.

But on his radio show on Thursday, Sandilands was having none of it, threatening to walk off the job and suggesting the complaints against the content were from “pearl-clutchers … [who] don’t like me telling dick jokes”.

“Some people that never listen to this show have made a group of activist haters who force people: ‘Hey, complain about this show, I know you’ve never heard it, but this guy is a misogynist gay-hating pig’, that’s what they’re saying about me, which I believe is completely false,” he said.

“So, this has left me in a weird position; what do I do? Do I bow down to the fake haters who want to control free speech?

“I’m in this position where do I just think, ‘It’s not worth the fight, I might as well just hang........

© The Guardian