Tamil Nadu Electricity Board [TNEB] — excess bill

Address:

No 29-30 mathura homes, kammavar palayam, nungamnakkam village, 602002

Sir, i am radhakrushnan, residing at mathura homes, nungambakkam, thiruvallur 602002. I paid an advance payment of 3000 for my june month bill on 29th june. They entered it on my eb card. I only consumed 540 unit for july-august period but now they are calculating 4 months reading and telling me that i have consumed more than 1000 units and the slab changed, so i have to pay 6 rs per unit. Do not know why they are taking 4 months reading. Also the person told me that they did not update the june month bill on their system. Is that my mistake? I am loosing nearly 2000 rs because it. Raised a complaint in tneb site, but no response from them as of yet.