Indane Cooking Gas — Gas leakage

I made a complaint about gas leakage to Indane Gas distributor Navaratna enterprize in Secunderad. Their person visited the house and told since the gas is getting over the leakage is a common thing. This is a totally false explaination since we are using the gas since past 30 years and such problems was not faced. After change of cylinder the leakage continues. I made a complaint again but the distributor is not bothered. Such gas leakage should be given highest priority.