Keep ringing from 5-7 each time I answer it says we will connect you to your party

Same as above - seems to be spam

I called the number (02) 9152 1618 back but i wasnt able to speak with a live person. I got automated system saying that they are unable to take calls right and to call again later. The IVR didnt state any company name.

6 phone calls from this number between 4.30- 7 pm when I finally answered they said were not selling you anything are you a home owner mortgage payer we have an important tax message for you.