Reliance CDMA — unnecessary charge deduction

Address:

Guna, Madhya Pradesh

sir,
i am using a reliance cdma no since last 2 years in m.p.,my rim cdma no is [protected].at 26th may 2011 15rs charge was deducet for missed call alert service without subscribing it.when i complained it to customer care he deny to refund my balance.sir i want refund my deducet balance because it is company fault not mine.