@kls240 I understand your frustration. Not sure if you play the lottery or not, but imagine if everyone that played the lottery got upset because they spent $15 and didn't win. Imagine if everyone that went to Las Vegas and played a slot machine go pissed off if every time they put money into the machine and pulled the handle and nothing came out. It happens every day.
Many of the events in Madden Mobile are based on what's called the "Coupons Collector's Problem" in statistics. Here's more information if you're interested in reading (https://en.wikipedia.org/wiki/Coupon_collector's_problem). It's actually pretty interesting, if you're into statistics. Also, here's a duplicate thread explaining this exact concern (http://answers.ea.com/t5/Madden-NFL-Mobile/Madden-Mobile-Domination-Live-Event-Is-A-Hoax/m-p/5532822#U5532822).
If the domination Von Miller was supposed to be that easy to obtain, EA would have just make him $20 to purchase and everyone would have him. Trust me, when I open a pack and don't get the players I want, I get frustrated too. However, I understand that i'm playing a game that I enjoy and I spend money on the game because I like playing it.
Not that it makes you feel any better, but I want the BCA Deangelo Williams and I spent a ton of money during the BCA event to try and get him. Needless to say, I didn't achieve him and he's well outside of my price range now ($600k is a crazy price to pay). Although i'm frustrated, I can't blame EA for not obtaining him.
Keep going on the domination events. Statistically, you're due to get that last badge with any win now.
