Hi all, in July I ditched my Telkom pre-paid as they moved to Vodacom for roaming and I don't get Vodacom reception. I moved to MTN and I bitterly regret having to do so as I am constantly bombarded by "Buy This" cr*p. I have used the normal Stop response with no effect whatsoever and I have also used the *997# again with no luck. Apart from using a hammer on the SIM does anyone have a means to stop this.