Indraprastha Gas Limited [IGL] — very high gas bill

Address:

Nitikhand -I, 486, Indirapuram Ghaziabad UP, Ghaziabad, Uttar Pradesh

Sir,
My igl domestic gas bp no. Is [protected], niti khand-i indirapuram. Ghaziabad. I am shocked to see gas bill of rs 70773.37 vide invoice no. [protected] dated 27.04 2019.
I am regularly paying gas bill in the past with following details :-
Invoice no.[protected] dated 06.03.18 from 16.12.17 to 18, 02.18 = rs 1050, invoice no.[protected] dated 03.05.18 from 19.02.18 to 22.04.18 = rs 1033, invoice no.[protected] dated 18.07.18 from 23.04.18 to 11.06 18 rs 843, invoice no. [protected] dated 11.09.18 from 12.06 18 to 06.08.18 =rs 944, invoice no.[protected] dated 07.08.18 from 07.08.18 to 01.10.18=rs 967. Thereafter i didnt received a bill till apr 19. I made an online complaint to issue bill.
The igl has now issued a bill invoice no, [protected] dated 27.04.2019 amounting to rs 70773.37. This including the arrears from 19.02.18 to 06.04 19. This includes bill for 19.02.18 to 16.02.18 rs 70479.
How can a family of 4to 5 can consume such a high volume of gas. It is now learnt that all previous bills were estimated and this one is actual one on the basis of actual reading. Even if meter readings are correct this cannot happen without fault in the meter or system. Meter reading was regularly been taken by reader. It is not possible to pay such a high and wrong bill. No action has been taken by igl on the complaint to customer care and online through bp id. Request help and advice to settle the issue.