Acer India — Got refurbished and damaged laptop

Address:

Vill Po PS Moirabari, dist morigaon, assam

I have bought a laptop in gujarat for work from home purpose and i came to home (assam). When i checked the laptop within 2 days of purchase, the laptop was not working. So i have contacted the customer service to register a complain on the third day. After that they sent engineers to check the product. Without even knowing the issue the engineer asked for a part replacement and after 1 month the part was replaced. But laptop dint work. Again after months engineer came again and replaced another part. And same kept happening till 6th month of purchase. Then suddenly they decided to replace the product after 6 months. So it took 7 months to get a replacement laptop. But i was said that i will get a replacement with an upgraded model and latest version. But when i collected the laptop, it was not a new product. it was refurbished. That too with damaged display and the body panel. So i have complained again and after 1 more month another part was replaced. And this thing is still going on. Basically in exact 1 year and 1 month of purchase, i have only used the laptop for 5 months till now. I was promised a latest version motherboard before 5 months. Till now i have not received it yet.i dont even know when the warranty period started and till when it will go. So suggest me what to do.