Levi's India — exchange

Address:

New Delhi, Delhi, 110037

Hello today my friend gifted me a two levi's trouser and one tershirt but due to some size issue and the fitting i want to replace the same with another jeans and i have the bill it just one day before 12/08/2017. But staff refuse that we can exchange only trouser and tee shirt is free with trouser so we can't replace the teeshirt i ask for same teeshirt but in another size but staff refuse to provide the same teeshirt