North Eastern Electricity Supply Company Of Odisha [Nesco] — correction of electricity bill

Dear sir/madam,
My consumer number is[protected] with consumer name srikanta chandra das.
In december 2019, i received the electricity bill as rs.4376= which includes the current month bill as rs.1641= and arrear amount as rs.2785/= which seems to me an erroneous bill and i request to correct the bill.
Here the summary of the bill of different months:
Dec 2019 — bill amt: rs. 1641/-
Jan 2020 — bill amt. Rs. 367/-
Feb 2020 — bill amt rs. 487/-
Mar 2020 — bill amt rs. 487/-
Apr 2020 — bill amt rs. -170/-

Looking at the trend of my electric consumption bill, how the dec-2019 bill can be this huge amount like rs. 4376/-.
I request to urgently rectify my bill amount and send me the correct bill. I have paid so far all the bill amount except the arrear amount which seems to me the erroneous amount.

Regards,
Srikanta chadra das
Ph-[protected]