Loop Mobile — deduction in balance without any doing call or sending a single message

dear sir/madam,

I the user of bpl/loop mobile service wants to complain about the rapid deduction of my balance in ma account.
i recharged on 24th july night at around 10 pm and then i switched off my cell, when i turned my mobile on and check da balance it gone down suddenly to Rs1.09.i had not done any call after recharging or sent messages.
so please help me sir!!!
Thank you, Yours respectively,
SUJIT D.K.