Replacement of mobile phone

Xolo care replace my phone
I Merajuddin Ahmed bought xolo Q1010i phone (which is under 1 year warranty) on 26/June/2014 and bearing IMEI no 911363600532386 and after 6 months the phone started stopping and shutting down frequently while playing games or using apps so I visited xolo care which is located at khartabad and gave my phone to xolo care officials for repair. After one month they gave back to me another phone saying that my phone Q1010i could not be repaired. The phone that they gave me was old and damaged. I returned that phone back to xolo care officials and from then onwards Iam going to xolo care almost every day but they are only making excuses. I do all my work through my phone and going in huge losses because of the shoddy manner in which the XOLO executives are behaving. I request the concerned authorities to address my issue at the earliest.