Indraprastha Gas Limited [IGL] — gas connection not received

No gas connection has been installed in my house. I have been calling every week for the past one months to the IGL guy named Shamsheer. He keeps on making excuses. And nowadays, he doesn't even receive my call. How can you people be so irresponsible!
Do I have to bribe someone to get this done????

And my connection is still awaiting installation. Now, I don't want the connection from igl and will also not refer to anyone to apply to igl. Need answers or pay penalty for delaying the service. I am attaching a copy of the receipt provided by one of their working staff. Please do the needful.