I also rang back and got automatically disconnected after being told by a CPU to contact the help desk. I called back number (07) 3556 5702 rang once then gets disconnected automatically.
1 complaints this year
1 total complaints
Anonymous on 0466 719 012
Missed call called number got an Optus disconnected message
AnimeMaster on 0452 762 377
Some Chinese robot i just blocked after i hung up
Anonymous on (02) 8731 8575
Unrecognised number. Didn't answer.
Called back, blocking my number.
"Optus advises the...
I Called Back on (07) 3517 9111
I returned a call from (07) 3517 9111 but the voicemail didn't mention the company name
Anonymous on 0460 015 591
Left message on voice mail yabbering away in Chinese. Presume it's a scam.