reward not recieved, how can this be corrected?

i never recieved a 20 oz coke zero awarded during the martch promo. I would like to have it re = shipped
The email said:
This notification is confirmation that your 20oz. Coke Zero has been shipped via FEDEX by our distribution center to the following address:

Your Tracking Number is: UNKNOWN
To track your order, go to: http://www.fedex.com/us/

The estimated delivery date for your order is: 7 - 10 business days