Indane — not received gas cylinder

my consumer no is 27435. i book gas cylinder on 12/4/15. on 18/4/15 i got a massage in which cash memo [protected], booking no474947 shall be delivered shortly written but till the date i could not receive gas cylinder. i call to the agency they told me that there is a shortage. please tell me that how this long period delay possible. please send me answer on my email id- [protected]@gmail.com, [protected] manoj kumar bhati. address- d53 ground floor slf ved vihar loni ghaziabad 201102