Bharat Gas Service, Hisar — non delivery of gas cylinder

Dear Sir,
I am LPG gas consumer, I come under with M/s National Gas Service, Hisar>125001 Haryana who are the distibutor of my area, My consumer No. 8938. My problem is after booking they have not supply the gas immediately .I have been provided with two cylinders. Presently i booked the gas on 18 may 2011, Booking No. is 55 today is 11 jun2011 .In the last month they supplied the cylinder after 20 days after booking. When I tried to book the other cylinder last month, it was informed to us that you cannot do so because you received last cylinder few day back. When contacted telephonically that it not a fault on my part, they assured me to supply the next cylinder in time, but all in vain.Most of the time their phone found engaged. Other consumers are also have the same problem where other supplier of the other company are suppling in time.
Please take corrective measures Ravinder mohan H.NO.15 Roop Nager Colony 12 Quater Rood Hisar 125001 Hariyana