no message left.. scam or selling

Caller: Call Centre

This number has called more than 20 times on my land Line. Never left a message. I decided to answer the call tonight. Long pause after I answered. Indian caller with lots of background noise. I was told that I was getting an electricity metering device tommorrow on my electricity meter, and what time was I available. Said no thank you, and made it very clear I didn’t want such a device. I’m on the Do Not Call register, which seems pretty useless.

Called everyday multiple times. Said they’re an energy company. We have asked them to stop calling but they still persist.

Ring multiple times a day, every day. Always just hang up

Rings several times on my home phone which is a silent number. Will be reporting to Telstra

Caller: Not sure but thye hang up everytime

This number rings frequently and when I say hello they hang up immediately and even if I don't speak they won't either and then hang up. Nuisance or get voice recognition to make up conversation for id and information scamming