Tamil Nadu Electricity Board [TNEB] — over billing

Address:

Chennai, Tamil Nadu, 600119

My consumer no o[protected]
Sholinganallur region.
The bill for the last two month cycle is exorbitantly high.
For first four two month cycle bill was as follows
Reading date. Reading. Bill amt
8/10/18. 300 530
9/12/18. 780 335
19/2/19. 1060 470
6/4/19. 1390 620
Then suddenly for next two cycles it shot up to rs 4000
7/6/19.2150.3496
9/819.3000.4090.
And surprisingly all bulbs in use are led.
There is something wrong some where as it goes totally against the law of averages and also probability.
Pls rectify and call for a comprehensive forensic audit.