This number left a message on my landline threatening my arrest due to tax fraud. Especially convenient that it is always around this time of year such scams come about. The fact they gave a direct number and did not mention my name at all also raised suspicion. I did not call this number back for security reasons and will not be following through with their request. I will call the ATO myself with the legit number and check. Be careful people especially this time of year !