Leeco — Product faulty given to service centre and they are not giving back

Address:	Jodhpur, Rajasthan, 342001
Website:	www.facebook.com/LeEcoIndia www.lemall.com/in

I have purchased leeco le2 mobile on 12th of aug. I opened it on 24th of aug and found it faulty as display was blank. Complained to customer care[protected] they said to give it to service centre. I submitted the same on 24th and they said it will take maximum 15 days to get it repaired. Now it has been 1.5 months i have called several times but they have not returned my set neither they are able to tell me when will i get it back. They say that they don't have parts for the same. But they have stock of new handsets.
Kindly help in getting my mobile back..