Offer DetailsPaytm Postpaid Mobile Bill Payment Offer - Flat 25 Cashback on First Mobile Postpaid Bill Payment of Rs.200 and above. Promocode can be used only once per user/number. Please make sure to apply the Promo Code before clicking on 'Proceed to Pay'. Cashback will be credited within 24 hours of the transaction into user's Paytm Wallet. The cashback will not be processed for non-KYC users.