Are you operating in Oz?
Unfortunately in the UK I believe the Authorities suspended the RT oral for a while and things went from bad to worse.
It isn't a minority over here.
Always try to sound like an off-duty Jumbo pilot, you get better attention from the ATC and clearances through airspace because the guy on the ground trusts you as a fellow Pro.
I frorget that the Ozzys make a lot of blind calls in their vast airspace.