These scammers only let the phone ring for a short time, hoping you will call back. I DON'T answer anymore if the number is unfamiliar.

Caller: (02) 8357 9559

These Cumberland employed callers are paid casual rates for a full days work on a rotational call basis, to find if the person is at home and at the same time seek information for their data base and when complete they use Optus calling to block a persons usage while they seek a yes and then direct your call to Optus (who has not any idea why you called them)
In the meantime cost is spent and is the internet is used they consume a cost for a usage.
They must be efficient because the call cost are all theirs. .

I didn't answer no message left, now blocked

Missed call after single ring no message left

I called back and there was an answering machine for RSPCA pet insurance. I do have an insurance with them

Phone only rang once and as I didn't recognise the number didn't answer

Same as everyone else, called no msg...now blocked

Call to my mobile
No message left.
Number now blocked

I, too, received a call that I missed. No message was left. I called back and no-one answered.

I’ve had a call - no message - blocked.

I just had a missed call from this number too.

Missed call on my mobile but failed to leave message

Me Too. They left a message one and it was silent. I haven't called them back. Who is this and why do they bother calling?

I rang back the number (02) 9061 9559, spoke with someone who hung up right away

I have also had two missed calls from this number over the past two days, no voice mail message was left on either occassion.

I've had two silent calls from this number over the past few days. No message is left and it's been a silent call on both occasions. Any idea who this may be