South Bihar Power Distribution Company [SBPDCL] — I need past six months bill

Address: 801503

Old bill of the year 2017
Respected sir I want the old bill of the year 2017. Today i got a bill from your company but in my view their is a mistake in the bill. I lost the old bills, so i just want to compare this bill with other to find out the average of the usage of electricity. And also tell me the rate of the electricity if it is in your favour...