Karbonn Mobiles & Universal — mobile in service center more than 3 month

Address: Chennai, Tamil Nadu

I purchased karbann k1515 mobile in "UNIVERSAL" at 22nd july, 2012. My mobile repaired after 1 month. I gave mobile to universal for service. He gave serviced mobile after 3 month, date of[protected]. After 1 day again my mobile repaired[protected] and i gave to universal again . He didn't service my mobile yet. He also worst response.
Please help to complaint Karbann mobile for worst service and universal for sale "unquality " product to me. I have all the document. Please help me.

My mobile number is: [protected]