I work as an security officer in New York city so I am provided with a emergency cell phone using which we can call totally free of cost to some specified numbers as police stations, hospitals, fire extinguisher offices etc. but now since last few days when I try to make any call with the same emergency cell phone then pre recorded message tells that there is no enough balance to make this call. I can’t understand what the matter is. If any one of you have any such idea to resolve this problem them please do suggest at the earliest. You suggestions are valuable to me.