Get flat Rs. 100 cashback on postpaid bill payment of Rs. 400 or more. Use the coupon code to avail this offer. Valid only once per user/credit/debit card. Valid only for transaction done via debit and credit card only. Cashback to be offered in the form of EGV which can be redeemed in the next 185 days. Not valid for Add Cash transactions and transactions done via FreeCharge wallet and net banking. Offer not valid for Airtel transactions. Offer valid on FreeCharge app, web and mWeb.