[Resolved]  Lenovo — Defective product & not responding properly

I have bought a laptop in online 2 years before. Within an year there was an issue regarding booting, so i raised a complaint and they fix that as a reason back panel issue and i claimed in warrenty.
Now after 1 year the same issue occurs and now they are saying due to keyboard, so they ask me to go nearest authorized service center. The technician who checked my product found keyboard strip which is in motherboard is damaged and they confirm that it's manufacturing defect and this is the reason why laptop is getting booting issue. If I want to replace it cost nearly 20000.

When I try to contact the lenovo customer service to check with these issue, I have spoke to 3 person, they all not responding and they also share wrong authorized center numbers even I have mailed to their higher authorities but still I didn't even received response mail from them.