That is very strange, especially since HR complains they are running out of resumes.....
My guess can only be that they think you will bounce to a major because they think you are over qualified. Still, seems strange to go to all that effort to say "TBNT"
To be honest guys, this is a fun job and I'm sure it's disappointing....but my opinion is to take it, run with it, and find something better. There is a lot of heartache here, and while you would no doubt enjoy the job, you may be able to find something better....
Just my 2 cents. Good luck