Calls multiple times. Never leaves message.

Caller: Website services hard sell pest.

Keep calling from 07 3520 43xx phone numbers the extension varies each time. Every night around 6:30pm. I have answered it numerous times. Half the time they don't reply - it goes silent and cuts off (robodial with no human to connect at the time I'd say). When I answer and a human is there, they try to flog me website services. Tonight I told them I'm on the DNCR and they can get a fine for breaking the law, and they laughed at me before hanging up. Hopefully they scrub my number from their list.

Never leaves a message, keeps calling

Missed call, no message. Answering an unknown number like this may enable a plethora of spammer/scammers to harrass me in coming days. I'm going to play it safe.