Telephone Scam. Don't give them your email address! They ask for it in order to send you details about their preferred Superannuation policy.
But it is just "voice phishing" a criminal practice of using social engineering over the telephone system to gain access to private personal and financial information from the public for the purpose of financial reward.
These fraudsters use features facilitated by Voice over IP (VoIP). This may also include features such as caller ID spoofing (to display a number of their choosing on the recipients phone line).
It is not possible locate the phone number (07) 3084 2494 because the phone number may be located anywhere in the Australia.