Vodafone marketing number, gives a voice message stating why they were calling and gives option to leave a message if you want them to call you back, it also goes to give information on how to opt out of receiving a return call, but as it is about to provide the details it states an error has occurred and automatically takes you to leave a message. Well played Vodafone, well played. I just hung up without leaving a message as I do not wish to receive calls from Vodafone, as I am a happy Telstra customer