Had a SMS asking me to call this number. They called me by name in the message, blocked.

No name given. Don't even say my name. Says it's an important matter and to call them back. Block the number - it's scam.

When they call, they do not tell you who they are (and refuse to), only a "business in Perth". And they ask for your date of birth before wanting to continue the conversation. No legit business does this.