Caller: Automated voice scammer

Automated voice who claims to be from an Australian crime task force linked to myservice or tax fraud. I immediately hang up and called back and some one with an accent of Asian decent answered, when confronted about the calls he laughed and hung up. I also believe this person is linked to scam calls posing to be the Commonwealth Bank credit card department and uses different numbers to reach their targets. My computer was hacked recently and I believe they acquire all their targets information initially this way. All their details have been forwarded to authorities.