Several calls. Offering free (Govt. sponsored) electronic devices to monitor electricity usage. Not too pushy just called often
Failing that they offer shower heads. Have received these and light globes in the past which were good.

Rang and did not leave message- assume spam

Caller: Australian Research Centre

Australian Research Centre wanting to do a survey on cost of living

Called but refused to leave message. Blocked to be safe.

Hung up when there was nobody speaking. Assumed waiting to be connected to recorded message. How are they allowed to call when number is registered on “do not call” register.

Dead air when I answered, assuming it was another of those robo-dial spam calls that was waiting to connect me with some sales person.