https://offers.smartbuy.hdfcbank.com/offer_details/56912/payzapp_offers

https://play.google.com/store/apps/details?id=com.enstage.wibmo.hdfc&hl=en

• Offer is valid only on Billpay/Recharge/DTH/Datacard through “Pay with PayZapp” provided customer is registered for PayZapp at the time of transaction.
• Min. transaction amount to be Rs.200.
• Offer Applicable for transactions on Mondays ,Wednesday & Friday.Offer timing (10 AM to 10 PM)
• A customer is eligible for cashback twice during offer period.
• Customer must have a verified PayZapp Mobile Number to avail the Cashback.
• PayZapp reserves the right to end any or all offers at their discretion without any prior notice.
• Cash back will be auto-credited within 5 working days after the date of transaction.
• In case the transaction is cancelled or left undelivered at merchant’s end, a refund will be initiated within the next 7 to 10 working days

Good one bro