Indane Gas Service, Adarsh Society, Ankleshwar 393001 — refusing to provide gas cylinder.

dear sir/madam,

we are having indane gas connection on my father name from 20 years.we are also having gas line connection on my father name.we were receving gas cylinder till last 3 month, but unfortunately they are refusing to provide us gas cylinder. they are saying that a person having the gas line on his name & same address is not given gas cylinder. but in our town 95% public are having gas line on same name & address, but still they are getting gas cylinder. also they are doing black marketing of cylinder with help of their some own staff members and also some of the customer, they are also knowing about that, but no one is taking steps to that.

so what are the steps to be taken to that case.