Tamil Nadu Electricity Board [TNEB] — Late Reading

As per government noms the reading has to be taken on or before 10th of that particular month but here in MOGAPPAIR EAST CHENNAI-37 they are making it a scam every single time they're coming to take reading after 18th and 19th of that month which is nearly month end and our normal bills are getting doubled which is totally unfair.. Usually we used to pay only 200-300 but nowadays we're paying 700 . We don't have AC too just a single fan even though we're paying 700 .. I need it to be resolved or else I'll directly send a email to the director of chennai Tamilnadu electricity board