I called back number (03) 8658 0323 reached voice mail but did not say for what company.

I have just had a phone call from (03) 8658 0323/">(03) 8658 0323 too (September 25, 2017).
No message was left and when I called back, it has automated message saying 'extension (03) 8658 0323 is not available leave a message'.

Looks like a scam. When you call back it tells you to leave a message Block it

Received a call from this number and when I answered there was no one there.

i answered the call. they just hung up

indian call centre

I too have received numerous calls from this number and when I returned the call received the person on that extension is busy leave a message so agree with Anne block it.

These people ring me 2-3 times a week. I am soooo sick of it...