My complain no is MMX 0604110872

My cell is in MICROMAX service centre from last 45 days....i complain many times....but i didnt get any reply form MICROMAX service centre....i submitted my cell in MUMBAI - (sion - divine cell)..
kindly provide me the exact sollution to get my cell back..my model no is MICROMAX-Q5-FB (In warrenty)