Dell India — Bad service and faulty laptop

My laptop stopped working within 4 months of purchase and it was not even turning on so I went to the authorised service center at Pimpri and they kept it for a day. Next day, it was repaired but when I took it home, it did not turn on. I went to the center again but they did not repair but only turned it on and gave it back. When I went home, it stopped working again. I asked for replacement so they asked me to call the customer care. The customer care told me that as per their records, my motherboard is faulty and this was not informed by the service center. Next day, a guy came to change the motherboard in my office. After repair, he left. I observed that the battery was draining faster. I turned it off at 21pc battery and when opened it the next morning, it did not turn on. I called Dell to replace as the problem was not sorted even after 3 attempts but they simply refused and said that they will call within 3 working days for repair. I asked them to send a guy the same day as i had already suffered a week of time loss but they did not. I had purchased laptop from Chroma and even took extended hardware warranty for 3 years. Despite that, the service is so bad and even chroma people are not touching it saying that it is under manufacturing warranty and if i go through them, repairs will take a minimum of 8 days. Since my first discussion with them, it has already been 8 days and four times repairs and yet, the laptop is not working at all. The laptop is defective and the company is refusing to replace it.