Indraprastha Gas Limited [IGL] — new connection not installing bp no.[protected]

I have been trying to get new connection since march 2020.

Continously i have been following up on customer mail and contact numbers.
Everyone giving false promise but nothing is moving on.

Current status: document uploaded since last 3 month still no action taken.

What should i do? They don't want business or they are already have multiple customers.

Pl logged a complaint reg. No action on installing new connection.