[Resolved]  Indane Gas — Higher Price

I am a customer of Indane Gas in Kosli (Haryana) with Sahid Surender Singh Gas Agency, Last Saturday I went to the distributor to buy a gas pipe which had a price tag Rs. 170, but they asked for Rs. 190 when I asked for a bill they start abusing me and suddenly they start pushing me out of their office. When I tried to call the Regional Sale Officer Mr. Navalkar on his cell number written on the booking window I founded that that number ([protected]) is not available.
So please help me to advise that what can an Ordinary Man (Aam Aadami) do??????
My details are

Name:- Harminder Singh
Add:- V & P.O. Nangal Pathani,
Teh. Kosli
Distt. Rewari
Haryana
Phone [protected]
Mob. [protected]