Frankly, I'm surprised to read it isn't a fretboard issue, but I more or less understand the "physics" behind the post. Just seems to me a hump goes beyond neck issues...but I've been wrong before, and am willing to accept I am on this.
Either way, seems like a warrantee thing. Definitely NOT RIGHT. Keep us posted on your progress with this. (I DID own a guitar once with a fretboard issue--and it was not something neck adjustments corrected. That was a loooong time ago, and I also long ago traded the guitar-so it was my educated guess). In any event, get that sucker fixed!!!!