HP India — Laptop performance issue

I purchased HP laptop 1 1/2 year ago. From the time I bought hp laptop i see performance issues frequent hanging. I raised complaints to ho but no response and they are close the complaint ticket without solving the issue.

I emailed them many times regarding the same, thy are saying we will check and get back but I don't hear any response.

I want hp to solve my laptop issue as I raised my complaint within the warranty period, it is ho who didn't solve the issue.

There are still 2-3 tickets open on my hp care which are not solved.