Punjab State Power Corporation [PSPCL] — bill more than my expectation

Address: Gurdaspur, Punjab, 143519

Dear Sir,
I have received my current bill for Rs. 4980/- which includes Sundry Charges of Rs. 1907/-. My all previous bills have been paid and nothing is over due. I am failed to understand what are these charges for. I am unable to pay this much bill. Please look into this matter and send me the correct bill.
Your earliest reponse in this matter will be highly appreciated.