Prestige Smart Kitchen — Burners leaking

Gas stove( PEBS) Purchased on 30.1.2020, put to use only from July 2020, had been problematic since made operational. first the knobs popped out, complained got repaired. now all the knobs got hard to turn, and there was a smell of gas, complained, mechanic came and serviced and said cylinder is leaking, called indane emergency, they checked and found it ok
indane man told it is leaking from burners and one small burner had little flame
again complained to helpline no on 12th Jan, they called to listen to complaint
13th another man called( plz note this is all on phone no [protected])and told will send senior man. No onecturned up. Today we almost had an accidental fire
Called up your man to hear from h that yesterday was a holiday( ridiculous, emergencies don't have holidays) and they will come today. looks the gas stove has to be either thrown or replaced immediately.
kindly attend else I will be forced to take some stringent action before house is put on fire.