Didn't recognize the number so I didn't pick up the phone. No msg left.

Rings repeatedly but won't leave a message. Probable scam.

Called landline, call not answered. When called back to check on the number, didn't ring and dropped out.

Overseas scammer using a spoofed (fake) national number, "Telstra Technical Department". You have a virus on your computer. Diverted to the scammer answering machine, I hope they enjoyed the chat with it.

Hung up as soon as I answered...second call in 3 hours from them...guessing a scam call