Reliance Trends — About Replacement

[protected]
Actually in other brands leggings are of two types 1)leggings ( full length leggings) 2)ankle length .But in avaasa brand 'leggings' represents the 'ankle length' and full length represents the chudidhars .As i am first time buying avaasa leggings literally got confused with tags so due to this i bought chudidhars instead of leggings so i need replacement so i went to the shop for replacement but they told its not possible to replace as those leggings are bought based on coupons.so i need replacement for those chudidhars kindly response on this issue and do the needfull