Dear techchase,
What you need to do is just send us a letter authorising us to cancel the DD as it has been misplaced & we will request our bank to do a stop payment for the DD.
We will then reissue the DD but this process might take 8-10 working days after we receive the letter.
For any clarification you can write to us using the Contact Us link on Help page using the link http://pages.ebay.in/help/contact_us/_base/index.html
Regards,
Huzaffa