Volkswagen India — Requesting for a Duplicate Invoice

I draft this mail for a request for a duplicate invoice copy of my VW Vento, 2011 model 1.6 l Diesel Highline car.
I require my car to be re-registered to Chennai from Hyderabad. I have taken the NOC from Hyderabad and submitted it to my Chennai RTO Office. They now ask for the car's invoice to analyse the then price of the vehicle to prepare the tax amount here. And to my bad luck, I have miss placed it.
I tried mailing the sales department of VW but didn't get any response
I want to request a duplicate invoice for my Vento so that I can start the process of my re-registration. It has already been 11 months since I started the process, and I don't want to delay it further.
I do possess the xerox of the original RC Card, which I can produce upon demand

Vehicle No: AP09CW5808
Email: [protected]@gmail.com
Phone: [protected]