When they called I answered with "You have reached the emergency gas leak reporting office of the Southern Gas Pipeline Company. If you smell gas, do not hang up the telephone or turn any light switches on or off. Leave the building immediately. The fire department has been notified of the address associated with your telephone number. If you are reporting an outside gas leak, please hold for the dispatcher." They hang up shortly after the words "emergency gas leak", and probably place my number on their do not call list!