Consumer Redressal

Respected sir/madam, I am Mr. Mangesh Sane, had purchased sony viao laptop (product name is SVE15123CNB ) having serial no (S/N) is 27556065 7028416 dated on 23/03/13, from Sony Viao company. Since from the day of purchase I was facing tremendous problems, which had not been solved even after 4 times repairing at authorized sony service center. Since, I am a PhD student such continuous software problem has been irritating me and my research work is getting badly hampered repeatedly. Also I have lost my very important data due to such problem. So Sir/Madam, I request you to look after this issue and take any stringent action as soon as possible against Sony company.