It is very serious matter that the gas is leaking even when switched off!!!! The service fellows do not believe us on many visits and when they check by lighting a match under the burners then they believe. They replace some parts and again it leaks.
The service people and their bosses are just bother to look into these aspect. I feel their design itself is faulty. I recommend to all people who own to check for leakage of gas in your stoves. And prestige do not have technology to manufacture a simple gas stove. pathetic.