Airtel India — Wrong deduction of my phone balance RS.55 for SFC PACK

Address:

South Delhi, Delhi

DEAR SIR,
MY PHONE NO.[protected](south delhi)

AIRTEL have Deducted my balance Rs. 55 for SFC PACK without knowing me.Even i don't know what is SFC PACK. I have nothing click or touch in my phone before or after this service they have activated on my phone number
i have call many time to airtel costumer care but every time they just said me to hold ur no. and they disconected my no. every time they even don't want to properly co-operate with costumer they are just deducting every time my balance when i call to costumer care whithout conecting to main costumer care officer they charge me even for computer voice calling from costumer care service