Called back and advised number was "incomplte or incorrect".

I called back number (03) 8101 1170 rang 3 times then goes to busy tone.

was called 2 days in a row. i answer and they hang up. i called back and the number is invalid/incomplete

Number calls, no one on other end suspected spam BLOCKED

I always ignore a call from a number from a different state and ring back from a different phone later. I rang back and was advised the number was incomplete.

I called back also , just a minute after recieving the call. Optus say incomplete or incorrect

Telemarketer calling about discounts on energy bills