HP India — hp pavilion x360 convertible service quality issue

Address:	Kolkata, West Bengal, 700073
Website:	support.hp.com/in-en/contact-hp

Hp pavilion x360 convertible,
Serial no - 8cg6212qv2,
Product no - w0j56pa#acj.
Registered under company - fine leather impex
Person's name - shadaab vohra

Issue description - i was facing an audio issue since a long time, my notebook was under warranty back then and first of all i used "hp support assistant" to seek help, more than 5-6 times i complained, sometimes they updated my driver sometimes they checked my notebook remotely and tried to help but the issue was there. The audio in my notebook starts to crack but it happens rarely, maybe once in a day or sometimes after 2-3 days and i have to force the restart by the power key.
. So they were not able to help me, at last they replaced my sound card but that did not help.
I got frustrated, i went to the service center on princep street kolkata, firstly i ordered recovery media from hp to make sure it was not an software issue, then after installing the media from the service center, then i gave my laptop complaining about the issue they again reset my notebook to factory settings and gave me back telling me that no issue was found, i was using my laptop and the sound again started cracking, i took the notebook to that service center at that time the issue was there and the service men took my laptop and told me to give them some time, again the next day they gave me back the laptop by formatting it and updating bios and wrote no issues found where as the issue was there when i bought the laptop to the service center,
But still the issue exists and i am not out of warranty now and stuck with this issue. The copy of invoice from the service center.
My email id is [protected]@gmail.com
Number - [protected]
I need help hp.