Kindly apply for aftersale. 

You can apply for after sale by open Account→My Orders→Find your item by swiping the top tab→Choose Apply for Aftersale.

(http://k.kili.co/916f )


Please also notice that currently only FBK (http://k.kili.co/916g) item support exchange.  Otherwise, only unmatched/ defect product can be returned/ refunded .