Claimed to be from ABS and asked 5 questions

Asian voice. Claimed she was from the ABS and were doing a quick census of Victorians, only 5 questions. When I said I didn't believe her she hung up.

not in service

Claimed to be asking questions on behalf of the local council, but seems very dogy that it's a Victorian number!

advises user mail box can not accept more messages.

A call centre I think, from the background noise on the unintentional voicemail.
Tried returning the call but not available and voicemail box full.

Claimed they were from australian bureau of statistics.
Asked them to provide proof and they hung up