So you're in a band in the 21st century, and then all of a sudden someone from a "radio station" emails you and they're interested in your music!! You get so excited that you write back right away, only to get hit with a generic response telling you to submit your music somewhere... I think I nailed the response on this one:
Dear *****,
I'm generically copying and pasting something significant into your email chain since I can tell with 100% certainty that you did not read my initial response. I do, however, in some small way appreciate your effort to convolute what's left of the music world, so here's to the deaf ears that this falls upon. If you've made it this far and you truly wanna work with a kick-ass rock band, then inquire again.
Jeff