Indraprastha Gas Limited [IGL] — not installing gas connection option, already submitted money and documents

Respected mam/sir,
I have submitted applications for a new connection of igl gas pipeline in vasundra. I have deposited documents and money (Cheque of rs 6000). Money has been deducted from my account. But till date nobody from igl is bothered for connection. It has been more than 50 days. When i visited igl office in vasundra they provide a phone number [protected] for resolving my issue. But this number is never picked up the person rather the person always cancel my call. I am not able to get the updated status. Such a poor service is provided by igl. What should i do now. Very pathetic.
My bp no is [protected]

Regards,
Pramod kumar
Mobile no [protected]