The Lumia offers app doesn't work in India. Here's what I did:
1) Send an SMS Prebook 950 to 9871929292. This should get you an automated reply with a unique five-digit promo code.
2) Once you have your device, send an SMS Prebook <IMEI> <Promo code> <Your name> <Your address> to 9871929292. You should get an immediate text confirmation that reads like this: "Congratulations! Your IMEI and promo code has been successfully validated. You will shortly receive a call from Microsoft."
When the Display Dock is ready for dispatch, you will get a call from Microsoft confirming your name and address. You will later receive shipping confirmation and tracking details once it has been dispatched.
That's odd. I got a promo code almost instantly. Maybe it only worked for messages sent before the December 11 release of the phones. Did you preorder it or buy it off the shelf/online after December 11?
If that is the case, check with customer care. However, if you did Prebook it, you will have a receipt or acknowledgment of some sort. Your best bet would be to either check with the store/website where you bought the phone or with Microsoft directly.
If u ordered ur phone from amazon...amazon will send the code within 7 days...and yes today MSFT called me and validated the address and name also they told me to send receipt scanned copy to a particular email id