Caller: solar company

called so many time

Caller: Unknown

From Sydney. Decided to pick up the call to be entertained, but was met by silence and then the person hung up.

Spam
Call at least once a day

3 calls (not answered) in 3 days; no messages left

I called back. Lady with a very heavy accent, knew my name. Asked several times if I was the homeowner. I asked her to spell the company name cos I couldn’t understand her. She asked me why. I said because I’m not going to answer any of her questions unless I know the company she works for. She hung up on me.
How do we report these callers?

Two missed calls from this number today, coming up as from 'Sydney'. No message left.