Hi @Snash
Welcome to the Sonos Community!
I am sorry to hear about this issue you are having with playing ABC Radio via a Sonos Voice Control command.
At present, this is expected behaviour - as Sonos Voice Control runs locally on your speaker and without the help of data centres, its ability to understand names of Artists, Albums and Radio Stations (among others) is somewhat limited. At present, only US English and French are supported, so when dealing with the English language, Sonos Voice Control has been programmed to recognise the most requested Artists, Albums and Radio Stations in the US. This does not include ABC (Australia) Radio, of course.
A workaround would be to mark ABC Radio as a Favourite in the Sonos app, and then, after at most 24 hours, Sonos Voice Control should recognise the request for ABC Radio. You can hurry this along by removing SVC from a speaker and then adding it back again, should you wish.
Add favorites to your Home screen
I hope this helps.
"Common sense is the collection of prejudices acquired by age eighteen." - Albert Einstein