....a little Aussie Telco known as Southern Phone, based at Moruya NSW.
They are backed and owned by local shires and councils in NSW, therefore resulting in low prices.
Best of all, you get to speak to a dinkum Aussie if you phone them.
My "super" plan is, $15 per month..... which is reduced to $10 per month if you opt for direct debit payment.
For this you get unlimited calls and texts, and 1.5 GB data.

https://southernphone.com.au/