Quikr — Replacement of mobile phone buy from quikr x but still me not get back

I ordered iPhone 5 16gb from quikr x mobile date 24 Aug 2015 i received me phone but it was in very bad condition its more over function not worked. i mail to quikr support or call them. they said we will replace your phone. on 26 Aug 2015 they pick my phone through delhivery courier company. quikr received my phone Sept. 4, 2015, 8:44 p.m. RETURN Accepted but when ask them about my order replacement they always make issues we call you. but not give me proper detail of my phone still they don't dispatch my phone yet. even i made video of phone not worked properly why i want to replace phone. all data i saved it when i try to connect with customer support they always make issues daiy i mailed to quikr support & in a day more then 50 time i call them but they not response me. some time i call from other number then they pick phone then i ask about my order they dint provide any information please help me order id 10031492 Name = keshav Bansal mobile no.= [protected] email id = [protected]@gmai.com url that help you to track status i got order https://track.delhivery.com/p/[protected] return order return courier company status :- https://track.delhivery.com/p/[protected] i add courier pick up receipt video it too large to add. please help me to get back my phone from quikr x. thank you