Punjab State Power Corporation [PSPCL] — I pay wrong bill

Address: Gurdaspur, Punjab, 143505

Respected sir,
I am sahil and i am a regular customer of the online services. I had my bank account [protected] . I had paid a wrong electric bill with rupees 8690 bymistake rather to pay my own electric bill 8690. I also paid my real electric bill 8690. Kindly refund my amount to my respective account. It is too big amount for me kindly help me.
I shall be very thankful to you.
Sahil
[protected]
Account no. [protected]