No or late delivery of gas cylinder

I booked gas for home delivery, and in our location we are facing problem of delay in delivery of cylinders by HP Gas, not only me but all people staying here are fade up with delay in cylinder delivery.

I transfered one cylinder from M. P. to Hyderabad. Now they are saying "there is no stock". Please call and check that if cylinder is available after one month or it can longer time also. We are new to this place and suffering very much due to this.