Kaff Appliances India — Kaff Gas stove blasted model HBR 604A blasted

My mother and maid was cooking in the kaff stove and it suddenly blasted without any reason. It has injured my mother and she was lucky she just turned back when her maid called at the right moment. It has completely broken down and fell apart and also broke the same kaff chimney.
We called the shop and absolutely pathetic response from their side. I am not sure how pathetic the product and service is and how the life of people are endangered. I am planning to file a case against the company as this is endangering the safety of people.