Booked for refill on 24/12/2013, Booking no. 556267,message will be deliver shortly with cash memo no.3000115896 on 04/01/2014.when enquire on 08/01/2014 on their mob. no.9830017883 some times they say short of refill cylinder some times they say their machine is out of order so the delay of supply. My consumer no. is 21522 at Baranagar Gas Services. What is the actual reason of delay of supply of refill cylinder?