Samsung Electronics Co. Ltd — about samsung galaxy core

Address:

Jalgaon, Maharashtra

Dear siri i purchase the galaxy core online from online shopee..but the handset giving the too much problem like display color get too faint, again the sometime volume key not work.and it also has problem that while attching head phone not work..sir it has too many issue..i submitted in pune galary 2 month before but they just repair it and back to me...sir i want help from our side how to replace it because their customer care not helping well please do needfull.--[protected]