Tamil Nadu Electricity Board [TNEB] — EB Bill Amount is very high compare to last one year

Dear team
For the last 2 yrs I have been residing in the same address. Eb bill regularly I am paying within rs 350 - 800. But this month my eb bill amount. Rs. 3876/- See we are working person we are leaving home around 8.30 am and come back at 8.30 Pm... I think Daily my eb units are increasing. Pls kindly check that issues and Pls do immediate action and then I will pay the Bill amount... Thank you.