North Bihar Power Distribution Company [NBPDCL] — regarding bill due amount

Address:

S.k Nagar, East Champaran, Bihar

I regularly submit my due bill, as per i received the bill. Last month my meter changed and suddenly i received the bill of amount 55000rs. I also have last 5-6 bill and i clear my all bill. And always getting no dues. Receipt. But in a month i received 55000, and when i complaint to sdo, he tells me that this is your due amount. I show him all my previous no dues receipt.