Vodafone — Wrong deduction from my account, mob number is [protected]

Address:

Gurgaon, Haryana

I tried to call their nodal officer(Sushma)many times today, she did not pick the call and reply me, There is wrong deduction from my account , they are saying , this is as per usages but I am not satisfy with their customer service team for the same.
I need my money back (250 rs.) which they deduct in wrong manner from my account.
One executive from their team said to me "We cannot pay u that amount"
Is it wrong to demand our money if somebody is doing wrong??