I called the number back as it came up as suspected spam. Didn't even ring but could tell it was in a call centre.. I hung up again straight away.

Caller: "Vodaphone"

Did not specify what the call was about and took there time to tell the company they are from. Was after accounts.

Caller: Govt hot water upgrade

Government hot water service upgrade... we are not even eligible as it applies to electric systems and they have rung so many times. Ggrrrrr