Get online support
Who always gets anonymous caller at this time???
Welcome to the Community!
You may register your number to https://www.donotcall.gov.au/.
Also, please be careful of the websites that may require your contact details as there might be some spyware that may leak your details.
Run a full scan on your devices and you may report any hack intent on https://www.cyber.gov.au/acsc/view-all-content/threats/hacking.