Indraprastha Gas Limited [IGL] — Additional Consumption SD Amount - unwanted

Website:

www.iglonline.net

I want to raise the complaint against IGL.
Why there is new Additional Consumption SD Amount of Rs. 500 added in my current bill - period 02-Sep-2022 till 04-Nov-2022.
When I called customer care, they told me that it's based on your last one year avg. consumption amount greater than 1250.
They have calculated the same for the last year period 23-Jun-2021 till 01-JUL-2022 with the highest unit price at that time i.e. 45.96. But after calculation, it was Rs. 1231 (26.791 X 45.96) with unit price 45.96.
When I asked that it's less than Rs. 1250, now they are saying it's based on current price Rs. 53. But When I asked that it was revised after 8th October 2022 then they go answerless. and telling that's this is of Billing department calculation. Then, I want to know, who will going to stop this type of loot from which every citizen is affected. No one is controlling them. I want to highlight this before Government of India, PM, CM, Petroleum Minister that please immediately take action against fraud/loot.
There are a large no of complaints already filed under same issue.
please take immediate action.