Update: I paid ₹1000 HDFC cc bill through freecharge and got 1% cash back on HDFC platinum dc.
Please note: Freecharge charges fees for cc payment above ₹1000. Idk how practical it would be to pay the whole cc bill in multiples of ₹1000.
Anyone found better ways to get cashback for paying HDFC cc bill payment, please update
Kudos