Caller: Indian lady claiming to be from Telstra

This lady was obsessed with trying to convince me she was from Telstra - ringing on behalf of the Do not call register.
She wanted to confirm credit card details and my address. She was very nasty when I called her out on it and threatened my phone would be disconnected if I didn’t confirm my details to her. I ended up calling her bluff - in the end she hung up on me