Same thing happens too me, miss lots of calls from the same prefix 038664...., when i answer no one there, cant call back??? weird

f***ots

It's Telstra

it's telstra

Called Telstra's "nuisance calls" centre on 1800 805 996. This number is known to them: it's a telemarketer.They use a computer to dial numbers at random, and it records only whether the number is answered or not. If so, it becomes "more interesting" to the automated system. When a number is often enough answered, it becomes interesting enough to be allocated to a human telemarketer.

Called Telstra's "nuisance calls" centre on 1800 805 996. This number is known to them: it's a telemarketer.

They use a computer to dial numbers at random, and it records only whether the number is answered or not. If so, it becomes "more interesting" to the automated system. When a number is often enough answered, it becomes interesting enough to be allocated to a human telemarketer.