Consumer Redressal

My consumer no-26790,I booked the gas via SMS and my refill booking no-720940,gas was delivered on 5/12/2013 but the cylinder was faulty and the gas was leaking. I am having a DBC connection, the old one is in use and the mentioned one is in sealed connection.My wife has informed the delivery man and requested him number of times for replacing the cylinder,but no result. we went to gas office on 3/01/2014 for making a complain for replacement. Initially they refused to accept the complain and after lot of arguments they accepted the complain and send the delivery man for weighing the cylinder. The delivery man reported that the cylinder is in properly sealed condition and its weight is 19.2 Kg. Next day they called us at the office and suggested to take a new one by paying full amount less value of left over gas, e,i I need to pay the value of evaporated one. I refused that condition. Hope your kind consideration for replacement of cylinder