Moving Licenses from AX 2009 to AX 2012

Hi AX Community,

I am currently having Dynamics AX 2009 license and wants to move on 2012.

1. Can I exchange these licenses for AX 2012 licenses ?

OR

2. Can I get a credit for my 2009 license value and buy 2012 licenses from scratch ?

What will be the cost factor?

I know that contacting Microsoft would be the best option, ,but I don't think they respond on Saturdays and Sundays. !!!

Thanks in Advance