Tamil Nadu Electricity Board [TNEB] — Electricity bill is very high

Address:

A-100,3rd avenue,anna nagar east ,Chennai -600102

I will open my office weekly once just for cleaning purpose and my electricity bill is very high for 1 and half years
I Dono how it is possible
Even this month my electricity bill is very high
I came to E.B office to check with the R.s department (the person incharge of billing)
He told to take a pic of my meter reading showed in the meter through my phone and to show him
So I went through the procedure he told
After showing my reading to him
He reduced my EB bill, I Dono how without even taking reading they can a send a bill value which is thrice a higher amount for the past 1 and half years
Even my March month bill is rs 1963
Please take action
And return my money back
Thanking you