Nine sports reporter Erin Molan has quit her segment with Kyle and Jackie O on Sydney’s KiiS FM after only five weeks following questions about her sex life and whether she had a “boob job”.

The NRL Footy Show regular was surprised by a series of questions from talkback callers, including this one from Omar: “I was watching the Footy Show last night and I noticed that your chest area has got a little bit bigger, just wondering whether you’ve done a boob job recently.”

Molan: “That is an incredibly personal question. I’m going to take the fifth on that one and just say I’m happy with my rig how it is. That is a weird opening question. Are you not listening to what I say about football?”

To which Sandilands said: “No one is listening”.

After the ordeal on August 1, Molan said on air: “As this will be my final week I’d just like to say thank you so much for having me … I can’t. Will I be subjected to this every week?”

Molan, 26, has not appeared on the show since but neither Nine nor KiiS FM management will confirm she quit because she was offended. Instead they blamed her busy work schedule.

It is not the first time the radio duo has been in trouble over inappropriate questions directed at young female guests. In 2009, Kyle and Jackie O, then on 2DayFM, breached the commercial radio code of practice when they asked a 14-year-old rape victim about her sex life.

Sandilands was again slapped by the Australian Media and Communications Authority in 2011 for denigrating a female journalist on air after she criticised his TV appearance. The comments breached the decency provisions for calling the journalist “a fat slag” and saying “Watch your mouth or I’ll hunt you down”.

A spokeswoman for ACMA said the Molan incident, which happened on 1 August, had not attracted any complaints.

When asked whether she had dated any sportsmen she said pointedly: “This is always a big question for any female hosts in sport.

“I’ve had one boyfriend who’s played professional sport. Not that I judge anyone but it’s not really my style.’

Sandilands: “Have you been with another cricketer though? Warnie? Have you been with Warnie?’

When it was mentioned that her mother was listening, Molan remarked “isn’t it horrific? My mum would be so proud.”

In a final insult, when Molan mentioned her high-achieving siblings – “my sister’s a lawyer, my brother’s a pilot and my other sister’s a teacher so they are all the noble ones” – Sandilands said “they’re probably all coke-heads anyway”.

A spokeswoman for Nine said Molan decided to stop doing the spot because of her other commitments with the Footy Show.