No message left (as usual) so called number and straightaway got recorded message, gist of which is, "Hi, thanks for returning our call. We were trying to contact you on behalf of one of Australia's leading charities to give you an important update about their work. We may try to contact you again. If you prefer not to receive this call or have any questions for us please leave us a message or otherwise just simply hang up now."
No idea which charity as no name was actually mentioned.