keep searching, basically 3 options:
1. Pay via PayTM using IndusInd card (I hope), it gives some good reward points/cashback (idk what) until 1.2L I think
2. Use HDFC Billpay with HDFC Platinum case for staright 1% Cashback (can't pay hdfc cc bills though)
3. Use CheQ for 1% coins (now their coin value is 0.5Rs for some while for some vouchers, its still 1coin=Rs1)
there may be more, but these are the main ones. Search forum for details info as some info might change with time