Ration card/NOC

hi friends,

as we're not chennai locals, we r staying here for rent. initially, to get the IOC gas connection, there was no probs, but now they r demading a ration card or NOC from civil supplies office to get the gas refills. we cannot get a ration card as we r not chennai locals. my hus had approched the civil supplies office for NOC but they just won't give it ; reason..........they have no reason for that. can someone pls help us?