We definitely want to assist and make sure you have access to what you need on your phone dieritter. I was unable to locate an application "action center", do you mean BlinkFeed? Please share more details so I can assist.
Follow us on Twitter at @VZWSupport
@AdaS_VZW It's a feature in Windows Phone 8.1 and not a dedicated app. You must have missed training on the OS
dieritter When you swipe down from the top of the screen you get nothing? You should see something like this,