Tamil Nadu Electricity Board [TNEB] — excessive billing - lockdown

Tneb excessive billing issue, just like others, i am also having a huge bill thrown at my face due to improper planning at tneb side, due to their fault now i am having to pay such an hefty amount, it was said the readings will be split and calculated separately foo each cycle, for me they have simply calculated the entire reading as one bill which is completely absurd. Please help fix the problem