Airtel
Deduction of amount without usage

Hi

My mobile number is 9901854822.

For the past 1 week i am noticing that even if i talk for 5 minutes amount deducted from my balance is very high.

I have activated for Airtel STD package paying 222 and additional amount for 1re std.

Inspite of this each time the balance is reducing without any logic.

can you help me out