If United is such a poorly run company in your opinion....and i am not saying it is not poorly run, ...I have one question for you to answer on here....Why did you send in the application!?
You see, they just don't call you for an interview...you have to apply...because it is something you want. Trust me the application process is not that simple.
If I really don't want to work at such a poorly run company, the last thing I am going to do is spend time calculating all of my hours and filling out an application....then going through all the hurdles...to get a chance to interview....Just calling your bluff.
It is frustrating to get shot down....just admit it. We all have at some point.