I believe these calls from various mobile numbers which are disconnected when you call back are actually from a auto dial system and if you answer or call back you number goes on another list where cold callers will start calling you to sell you anything from funeral insurance to getting lights replaced free, you know what I mean.

Female called asking if I was happy with my home loan and/or would I be looking at investing in another home and would I be looking at obtaining a home loan. Very persistant. Told her not interested and none of her business and hung up. Called back and was answered that the number was disconnected. This is one of 15 numbers from landlines and mobiles received over the past two weeks. Why isn't there a government body to stop this bullsh*t.

When I answered I heard a recorded message say "Thank you for holding for our team of trained representatives."
I hung up.

Selling insurance

Clearly using a re-dialer or masking software. As indicated previously the number is disconnected on call back.

Unwanted sales calls.

Got a call but hangs up before one can answer it. Stupid & what a waste.

missed a call from this number and when I rang it back - said it was disconnected?

wanting to sell home loans

received a recorded message from a girl left message "just called to see if you are eligible" and call ended-when I called back Telstra message "the number you have dialed is disconnected???