Advocate. If you wish to raise a complaint with CASA there is one single and effective route open to you that CASA cannot and must not interfere with.
Write to the Prime Minister. Protocol requires that it is passed by the PM's office to the responsible Minister who must then pass it to the Department and then to CASA, or perhaps direct from Minister to CASA.
CASA is then responsible for providing an answer, via the Minister, to the PM's office.
Anastasi would not and cannot interfere with this process which is available to all citizens.
My understanding is that the Board of CASA is mere window dressing - a bunch of impotent clowns who do not have any authority, unlike in a public company, so appeals to them are pointless anyway.
The other alternative is to put together a dossier - solid evidence of major malfeasance, then write a snappy Two page press release. Send the package to every radio, TV and newspaper in the country. That worked for me when I caught a major insurance company diddling not only me but thousands of other customers. After Eight weeks of work I got what I wanted in Two hours.