Delhi Jal Board — Overcharging k no. [protected]

With reference to above K No. I have got overcharged bill. I got the connection installed on 02-Sept-2015 and also got the meter installed and submitted the meter installation report with the Saket DBJ office. After the water connection installation, this is first bill I received i.e. this bill is for approx 6 months.

As per the meter, actual reading is 57 Kilo liters where as I got bill for 156 Kilo liters bill amount Rs. 2449.
As per the current DJB policy monthly usage is less than 20 KL per month exempted, so in my case there would no bill charges at all as the monthly consumption is approx 9.5 KL per month.

Please rectify the bill on the basis of fact given above. If required, you can have meter reading again.
Thanks,
Harihar Nath Mishra