BSNL/prepaid — Deduct from my mobile balance amount

Address:

North 24 Parganas, West Bengal

Dear Sir,
This is kind infomation that my mobile no.[protected].on 01/4/2011 i recharge my phone Rs.100/-.yesterday i will observed that Rs.12/- deduct from my mobile,then i contact with customer servic and talk with customer excutive he told me that i look in to matter and complain lodge.Docket No.DO6CD411567.Today morning i observed that Rs.24/- deduct from my mobile.i know that no any coller tune,no any type of activate with my connection.what is possible?
Therefore,i am request you that pl look in to matter as early as possible.This is too much hardship labour money.
thank you
krishna Basu