I called back number (02) 9188 6862 was put on hold music but no one answered the call.

Caller: “My Tax Refund Today”

Along with their other hundred numbers they call and send me text messages every day about “my tax refund.” Continue to call even when you tell them you already have an accountant/lodged your tax return.

Unknown caller looking for someone that's never owned the number called. Scam?

This is an accounting firm cold calling existing clients of other accounting firms ..