Check here : https://www.technofino.in/community/threads/idfc-first-bank-launched-its-debit-card-reward-system.7394/post-422116
OR https://www.technofino.in/community/threads/idfc-first-bank-launched-its-debit-card-reward-system.7394/post-417880
OR...
Check here : https://www.technofino.in/community/threads/idfc-first-bank-launched-its-debit-card-reward-system.7394/post-339061
OR https://www.technofino.in/community/threads/idfc-first-bank-launched-its-debit-card-reward-system.7394/post-344769
Check from here : https://www.technofino.in/community/threads/rbl-savings-account-experience.1401/post-409997 or maybe use on BBPS sites like UCO/SBI etc.
Check here : https://www.technofino.in/community/threads/best-way-to-pay-credit-card-bill-0-93-1-reward-indusind-0-93-and-hdfc-1-debit-card.4373/post-341775
Only 1%, not 2.5% : https://www.technofino.in/community/threads/on-which-apps-plat-dc-gives-1-percent-cb-for-paying-cc-bill.11844/post-383190