Many thanks TerryW.

I'm still puzzled why ATO has asked me to lodge trust annual tax return (my company is trustee of the family trust of mine) while I am lodging BAS and pay GST through my company.
They told me that I even don't need to lodge company annual tax return, which I see a clear conflicting message.
At the same time other mobs from ATO told me to lodge annual company tax return even for nil ammount, which is fine. But it sounds a bit complicated when I am lodging BAS for company and lodge annual tax return for family trust
However as this company is the trustee then I think it should be OK.

I will speak to an accountant about this.

Cheers,