Sony VAIO — Mother board problem

Sir i am the regular customer of Sony products. I purchased Sony LED TV, HOME THEATER, CAMERA, MOBILE . I am very happy with the performance. So with this good will now i purchased Sony vaio touch screen laptop just few months back and i used it for very few hours . Your service center informed me that it is mother board problem . Now i want the replacement of that computer sir . I am really disappointed by its performance i hope that your company will oblige me