some Indian .Very annoying

Received a call from this number on my mobile, rang back from my work desk phone and was placed on hold immediately without any "introduction" on where I rang.

Repeatedly rang home phone and mobile, could here many Indian voices in the background.

sounds like a call centre - many voices in the background - probably a scam

Caller: (02) 7250 5505

13 missed called from this number in under one minute?! Something's not right. Blocked.

Caller: Scam

Answered and wouldn't provide the company name. All he said was he is working in my local area for a government campaign to provide a solution and asked if I'm the owner of xxx address. I said no and hung up.

another scammer avoid

Same as others, received call which I didn't answer. But didn't recognise the number so did not return call.
Getting a lot of random calls recently!

Hangs up after a few rings

Just rang my mobile, but there was only silence. Highly suspect spam, scam!

I answered, there was silence and the phone went dead. No message was left.

Returned call on a different no. And no-one answers