Hi all,
Just want to share with all those who are still unaware that now getting an NOC for renewal is not a problem anymore. You just have to take a print out of this NOC Application -
http://dgca.nic.in/public_notice/PN-medical%20NOC.pdf .
Fill it up, scan it and send it to the given mail id along with enclosures.
I got a response from them in 15 minutes (Yes, 15 minutes).
Thanks to @Cyrilroy for help.