Caller: Someone claiming to be from the "Do Not Call Register"

He told me that my personal details have been on sold to overseas callers and that is why I receive the phone calls from the "Tech Dept for Telstra" Now from tomorrow he is going to stop all International calls from coming in to my phone. He confirmed my personal details as is know to the public in the phone book and then he wanted to know if I pay my phone bill by "direct debit" and I told him that was personal business and that I do not discuss my financial business. From tomorrow all these call should stop. We will wait and see.