Good, report it to your RAPAC convenor and he/she can take it up with CASA. It did ask for feedback re VFR broadcasts on ATC frequencies, so this is the info that should be provided.
FYI, I am not arguing against being on the Multicom, Dick. I can see both sides of the argument. I'm merely being sceptical. After all, your track record so far WRT Alerted See and Avoid in E and verbal diarrhoea calls in the circuit is not good...
What frequencies were involved this morning and roughly what time? I'll pull them off LiveATC and have a listen.