Dear sir/maam,
since you are bonafide consumer and you have not steal electricity. There is no point of giving any extra amount which they are claiming. You can file a consumer complaint against them on the ground of arbitrary action by the authority. For that, as a alternative you can send the legal notice to the electricity department and claim your hard earned money which you have given to the authority, without you being at any fault.
hopes that solves your query
YUGANSHU SHARMA
ADVOCATE
DELHI HIGH COURT