Complete list of App Store review rejection reasons
You really don't give us much to go on, like what the reasons where and such. BUT, when it comes to Apple, a lot has to come down to the App Reviewer and if they had a good day or not. I have had one rejected, and submitted it again, changing a font and color, and it was then successfully accepted into the App Store.
At the end of the day though, they are professionals, and if there is a reason they have given, fix it and move on. It could be something as simple as UI Design ?
You say they have given you 3 different reasons, but then say why are they not giving you all the reason ?? 
Apple ~ App Review Guidlines