Australia Reverse Phone Lookup

I have complained earlier about this caller. I have received a further call this morning. I would ask they stop calling me or I will report them to the police.

This person contacted me by sms, and when advised it was a wrong number, asked for photographs. I have been rung sometimes daily by this person over the last 5 weeks approximately I blocked the number almost immediately. It has not stopped the calls.
My son rang the number to ask that phone calls stop about two weeks after they started.
I was in hospital recently undergoing surgery, I received a call at 5.30am! - blocked and so I did not hear it ring, but invasive even so. I receive calls from this number day and night. I find it un-nerving and worrying, and verging on harassment. I have asked them to desist, but they keep ringing.