Big Bazaar / Futurebazaar / Future Retail / Hometown — clothes exchange

Address:

Himalaya mall, 380054

I bought a kurta from acropolis mall for ₹699 and tried to exchange it with another kurta from himalaya mall big bazaar worth ₹899 in three days time but i was told that i can’t do the same without downloading the future pay wallet and i can only buy kurta for same price and not more. If buying and exchanging is going to be this difficult it should be made clear at the store itself and not be advertised that big bazaar is exchange friendly