HP India — Sold defective laptop which not worked from day 1, money not refunded/defect not fixed

Bought a new laptop on June end of this year, immediately found multiple issues. Contacted hp team for refund but till now not even fixing the problem. And no response for my mails.

Raised multiple tickets but it got closed that call not connected. When I checked the number, it was incorrect. How can incorrect number stored, I believe it is to increase the days and say refund can't be done. Basic logic is I started my conversation through my WhatsApp number and they connected me through call. How come the number changed.

Warranty incorrect too which they updated after 2 months of follow ups