True, they keep giving 100% Cashback offers, for Rs 10, Rs 15, Rs 20, Rs 30, Rs 45, Rs 50, Rs 55, Rs 75. Maybe with the hope that some customers may still use it even without these offers. No other platform is giving 100% Cashback these days.
FC10 is valid every month. Straight Rs 10 Cashback on Rs 10 payment. And they periodically dole out offers for higher denominations as well. One of my Postpaid connections is just being paid with these cashback offers (coupled with AmazonPay). Effectively 0 cost for past 4 months.