I wouldn't call him, not unless he was swimming in my dam. No one deserves the out of band hassle.
He was on the Australian TV Q+A which had questions submitted by the general public, and it's not all that hard to get meaningful questions put forward in Parliamentary Question Time .. which is better for all as it goes on the record via Hansard.
I've written to the Prime Minister and nary a response. I'd call him and complain about his government's failings, and failure to respond in a timely manner to concerns and letters directed to him.
I'd call him useless, but lets be frank he is no worse than his peers, or recent prime ministers from both sides of Parliament.
TBH if you called me with general complaints et al. I doubt I'd bother replying either.
If there's any actionable issue that you want to raise a better starting place is with whatever minister has the portfolio that's relevant. Also write (and cc the minister) to whatever national reporters are covering that domain.
It's about finding the leverage to raise awareness and response to whatever policing, agricultural, medical, defense, et al. questions or concerns you have.
I'd call him useless, but lets be frank he is no worse than his peers, or recent prime ministers from both sides of Parliament.