Trying to download for two days straight!!!

Brand new macbook pro 15 retina its less than a week old. I bought this game as my first purfchase and have been trying to download for 2 days. How do I cancel and get my money back? What a joke! Also I have a 75 lightning connection and I tried from my home and my business which is also 75 connection!

Faja006 about Middle-earth™: Shadow of Mordor™ GOTY