Caller: Energy Savers

Called number back and voicemail said "welcome to Energy Savers"

When I went to answer it - it hung up. But if its energy savers as someone is suggesting its most likely a scam call.

New number same scam

The call was from an offshore call centre claiming that my email address and phone number were linked with a Commonwealth Bank account. Apparently there was funds that had been transferred to my Commonwealth Bank account for bitcoin which I have never registered for. I believe this phone number is fraudulent and they are trying to gain access to account accounts.