Big Bazaar / Futurebazaar / Future Retail / Hometown — not so satisfactory solution offered

Address: Pink square, Jaipur, Rajasthan, 302004

I got a call from one of the executives in bigbazaar regarding tge money they have charged me for the shopping bag. They asked me the mode of payment which i said was cash so the solution they gave me was refunding me Rs.20
They even said they would have refunded the amount if i had paid using my card. They had made no efforts to gain my trust back on the brand. They could have taken some other way of refunding or solving my issue.
Its like doing illegal acts and then refunding the amount to cover it up and that too on their terms.