Norton ate a key

Bought a Norton 2010 at retail - 3 keys.  Installed on one computer.  A few days later the motherboard on that computer died.  Tried to re-activate the key since it no longer recognized the motherboard, but instead it ate another key.   I am not happy - especially when I cannot easily find a way to contact a Norton representative to clear this up.

 

So - any idea on how to get that key back?  This is semi-urgent since I have two more systems about to expire.  I'm not putting it on another system to I get this straightened out.