They claimed that they were calling from the "Telstra technical department" and that there was a "security issue with my ip address".
I blocked them and I reported them.

Same as above entry - claimed to be Telstra & said my IP address had changed from private to public & was therefore insecure.
When I replied that Telstra isn't my provider, she said they are "in charge" & offered to take me through steps to "fix" my IP.
I said it sounded like a scam & hung up.
Blocked this number.

Caller: Creative Web Services designer

Creative web designer; unsolicited repeat calls

Caller: scam "NBN"

Noisey call centre supposedly calling from "NBN on behalf of Telstra". I am not a customer of either. And NBN is a wholesaler and would not call retail customers anyway. Hung up.

Left no message