Claimed to be from Telstra. Did not give her a chance to carry on with Scam BS.

I called back the number (02) 9598 5201 and the guy on the other line did not mention the company name

Clamed to be from Telstra by the name of John. Said it was a scam and hung up and he was yawning all through the call. He then called back and I told he was not giving good customer service with yawning through the call. he then said I was Bull sh*t

I have been called 7 times. Been threatened with internet disconnection (I don't have a computer or internet at home)
She also called me a slut and said she hopes my mother dies. Same lady everytime.

I called back number (02) 9598 5201 reached IVR for the St George Private Hospital.

Telstra scam as per TG comments above.

they did not leave a message... just hung up. i rang back...just engaged signal

There was lift-up about 10secs after I picked up, and there was office noise in the background, then hang-up after about 2 secs.