Indraprastha Gas Limited [IGL] — Bill amount not right

Address:

179 D F POCKET GTB ENCLAVE, DILSHAD GARDEN

I don't receive any hard copy no message nothing via email
My meter was corrected last month it wasn't in readable condition
How they sent the bill no idea
This time it's 4000 plus 2000 from the last unbilled period
But I believe it's an over-estimation and not based on a true reading

BP number in screenshot below