Caller: Said they were Telstra

Said they were Telstra- I was very suspicious and said they could email any correspondence- she said she couldn’t- something about an IP address- I was very sure a scammer so I said ‘fine I’ll hang up and call Telstra back then due to so many scam calls’ - didn’t even bother because when I tried the number she called on ‘the number you called is not registered’ - definitely dodgy