Resigned Without Notice? How to Address and Respond to a Payment Request Letter

I have resigned from a company without serving the notice period. After that, I received a letter asking for an amount to pay. I am going to send a bank draft of the amount to the employer. What should I write and whom should I address? Please share any ideas for the format of the letter. Thanks.

You may use the below draft letter while enclosing the Bank Draft to your employer:

Date
Company Address
Kind Attention: Mr. XXXX (Concerned Person)

Sub: Payment of Amount Due - Reg
Ref: As per your letter dated _________

I'm pleased to enclose herewith the cheque for Rs. _________/- drawn on (Bank Name) DD No. ________, dated ________ towards the amount paid against the notice period which was not served during the period of _______ after my resigning on (date). I look forward to receiving the relieving letter at the earliest.

Please acknowledge receipt of the same.

Thanking you,

Yours truly,
Your Name

Encl: As above.