My parents got a mobile, the pay as you use calls type. They more or less got it for emergencies. Yesterday they was going to use it and found it was not working. They tried a new sim card in it and that did not work. Today the rang the operators and was told that their number has been disconnected and also there sim card is no longer of use even though they have quite a bit of money on it. The reason being they have not used the mobile in 60 days.