Okay, I've thought of another way. This'll be my last guide for now, I don't want to saturate the market with all of the ways to a free month of wow in one day.
1. Beat someone up and take 15 dollars from them.
2. Take 15 dollars from someone without them knowing (Doesn't require you beating them up)
3. Pay for a month of WoW.
4. FREE MONTH OF WOW OMG!
By following any of the guides in this thread you can play wow for freeeeeeeee! Because apparently a 15 dollar month of wow is free whenever you only pay 15 dollars for it. With this in mind a free month of wow becomes much more easily attained. It's that silly, close-minded thought process of free meaning something doesn't cost anything *Scoff* that makes a free month of wow seem so tricky.