Sca telling me my Telstra bill was incorrectly charged over the past three months. I have also had scam emails on the same subject supposedly coming from Telstra.

Same as reported by others - trying to tell me I had been overcharged by Telstra. Hung up when I asked for specific detail of my account and told them I would ring back in to Telstra billing directly. Amount they said I had been overcharged was too large compared to our actual account to have been authentic.

Autodialer.
Now blocked