South Bihar Power Distribution Company [SBPDCL] — Excessive bill for 04-2017

Address: Nawada, Bihar, 805125

Website: google

Reference to customer id NA38064, Account No. RJLRJ4870, Bill id[protected] in favour of Bangali Sharma, Rajauli, Nawada.
Sir, since the fixed charges till 03-2017 was Rs. 170.00 and being paid regularly through internet banking. But bill for 04-2017, the fixed charges mentioned as 670.00, a drastic increase, whereas no arrears due for payment.
Why it is so? I quote here that my mother aged 74 yrs only lives at home i.e. the bill address with 02-03 CFLs and 01 fan utilization. If any error, may please be rectified so that i should pay in time. kindly reflect the corrected bill as a fresh..