Citibank — fuel reversal of 0.75% not paid for platinum debit card

Address:

122001

I am using citi bank platinum debit card on iocl petrol pumps for fuel purchase. Earlier i was getting fuel reversal of 0.75% on same fuel pumps but from 27th march, 2018 onwards, i haven't received the reversal
Already raised,[protected] and nsr18031744 complaints via citi bank customer care. But, they say that those fuel pumps are not liked to citi bank. But, on citi bank website, it's written that if we swipe citi bank debit card on any iocl (Indian oil) fuel pumps, we do get 0.75% reversal. There is no list mentioned as such.
I have swiped on few more petrol pumps but i am not getting fuel reversal from 27th march, 2018