Calcutta Electric Supply Corporation [CESC] — Regarding high bill of CESC

Dear sir,
This is to draw your kind attention that i have received a huge bill due to illogical estimation in the last month consumption. Average of last 6 month can't be the proper logic as it is having winter months. If you look into the same period in the last year it can give a close estimation for the same. My last month consumption was shown 197 units only but in the last year in the same period it was 330 units (This year it may be some more units as we are working from home). I have calculated my billing and come to a result that i was charged rs. 710.39/- (Only on energy charges with out any tax) high due to this wrong estimation on your part (I believe it was not unintentional). If i consider the tax it will be more than rs. 800/-. I have calculated it considering if you estimate the unit consumed as 330 (As in last year) against 197 unit which was charged illogically.
It this pandemic situation most of the people are suffering for their bread and butter and this illogical calculation will no doubt put us in further trouble.
Requesting your good-self to reconsider the same and rectify it before the due dates (10/07/2020).
Thanking you.
Jayanta pal