Doing a dodge - haha

You most likely received a distribution from your parents trust. This is a perfectly legitimate way of minimising taxation.

You are being asked to pay tax in advance by the ATO based on last years return. Speak to your parents about paying the amount for you or vary it to nil if you will not receive a distribution this year.

Either way you have received instalment income of some sort last year - i.e. interest, trust distribution, rental income or business income etc that you had not had tax taken out of.

The ATO wants tax on that expected income (based on last year) now for next year.

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Arguably my Automobile is Awash with Alliteration - Subaru Sti S202