Forza 7 redeem problem

Just get into my new R7 with free sufital copy of Forza 7. But where is it? I try it in win. Store like dell video, but nothing. Wrote some E-Mail to dell support, nothing. Man, I bought this  tower for almost 2000 euro but they don’t give a about my question: Please big Dell help me  to redeem my copy of this game!!!!!

dell this is not costumer oriented company