Indraprastha Gas Limited [IGL] — poor customer care service of igl

Address:

18-C, OCS APARTMENTS, MAYUR VIHAR PHASE-1,EXTN., New Delhi, Delhi, 110091

My bb no [protected].
This harassment is going on for last 2 years repeatedly complaining but your system is not improving sometimes you say new agency hired they will correct the details some time other excuses. Bills are not received then you start charging late payment fee.
For customer care no email of any officer of the igl is available to take up matter and resolving the issue. Will you let me know who will listen and ensure things timely and correctly?
Or we need to complaint to consumer forum.
Please give me mobile number of supervisory officer/executive officer of igl.