Vodafone India — Deduction of call balance

Address:

Kolkata, West Bengal, 7000 099

The balance seen in my Vodafone number was Rs 124/- on 30th June 2017.
It has suddenly reduced to Rs 18.80/- today. In this meantime I had only one call which was of 88 secs duration costing only 67 paisa. Please refund the extra amount soon. My handset is LG and is keypad . Still now it has not done any problem. My number is ##########. I also called in the Vodafone customer care but no remedy was done.
Please look into my issue soon sir. Will be highly oblidged by your kind co-operation.