Dakshin Haryana Bijli Vitran Nigam — meter reading is so high

Address:

Gurgaon, Haryana, 122102

As dhbvn provided us a new digital meter and its meter reading was (new 142) and (old 1) then on 12/05/2019 it was ( new 341 and old 142) then on 12/07/2019 it was (new 652 and old 341) but now on 12/09/2019 it is ( new 1879 and old 652) the unit consume was 1227 this is not possible as i use only fan and light in my home as there was no due of previous month i had cleared all my payment but now the money has come about ₹7778. My account number is G22BH112806 NAME BRIJ BHUSHAN . PLEASE HELP ME ITS A HUMBLE REQUEST.