I called back number (02) 9307 3214 rang once then gets disconnected automatically.

Rings constantly and hangs up/disconnects. I've just now blocked number.

I answered this number at 15:09. He said he was from Google and wanted to help me improve my rating. I asked them to call me after 5pm.
They called again at 15:14, 15:19, 16:30 & 16:37. Either they can't tell the time but I said don't bother calling me after 5pm because this was now harassment...have now blocked this number

this number repeatedly call me. I have answered in the past and there is silence then it disconnects. I now don't answer it.