Sabarmati Gas — Unrealistic Bill amount

I have replaced gas meter as it asked by officials. After changing meter, I got bill of 16K for 256 units of consumption. Generally gas consumption for my case is limited to 2~3 unit for two months. So mostly I paid minimum charges for 5 units. Meter was stopped working for two year according to their record & they are charging way ahead o[censored]sage that newer happed. If I count maximum usage of gas for a person (who is using less than 5 units for two months) for two year then it will be maximum of 60 units in any case.

I asked for a reason for the 256 units. They were telling it's average of previous usage. Then it never come to 256 unit. Registered complain with reference no [protected] with Sabarmati Gas but no response so far