TTK Prestige — Burner problem and service complaint

Dear sir,
Phtg model gas stove i purchased from chennai in June 2022 and it us fault and given complaint last 10 days and engineer came and checked and informed to replace burner but after engineer not picked call and again given complaint for replace of burner but today engineer same informed to me about burner not in stock.
Sir, such a big company and telling not having stock from last 15 days and passing time.
Please take immediate to replace burner otherwise if any injury are loss than your company is responsible and legal action will be take against u.