Indraprastha Gas Limited [IGL] — I am complaining about wrong billing of igl

Address:

130 D, B Block, Kanchanjunga Apartments, Sector 53, Gautam Buddh Nagar, Uttar Pradesh, 201307

My BP no. Is [protected], in the name of Amar Pratap Singh, add- 130 D, b block Kanchanjunga apartments, sector 53, noida, U.P.
My Igl connection has been started on january, 2017 and amodification charge of Rs. 1886 has been charged to me with this condition that this charge has already given by the society. I have docoment of this data. Despite that IGL give me the same amount in my every bill till today, 08.03.2019. Many times i talked to the IGL officers like rakesh agrawal, vikram jaitley, nidhi jaiswal and many more. All of them told me to they resolve this problem, in last they ask me to provide the details of this payment paid by the society in 2015. I am also a govt. Employee and resided in govt. Accommodation. How can i provide this payment details which was given to IGL.
I requested to the IGL Officers to plaese resolve my problem as Sion as possible.