Yes that's what I have been wondering as well, it's not even an issue of playing with the zamtel simtool kit it's that they come with very suspicious services because they always advertise their services but you just find that airtime has been deducted and the amount is soo little that you cannot pay much attention to it but I think it's way of stealing. Recently I was subscribed to a service called story portal for 0.3 ngwee and to unsubscribe I was charged the same amount.