The problem is WTF is that they are not calling from Australia. They are in an overseas call centre, so Telstra/Government etc are unable to do much :-(

scam calls 2 in 11 minutes, first try was indian womans voice that they where going to ease up on calls to my number, first was 0429 568 187, second 11 minutes latter 0421 337 490

call center noise in back ground, this type of criminal harrasement should be grounds for visa removal