You dont call them directly as they have music supervisors that screen and pick music for upcoming shows. You'd have to submit music to places like pumpaudio, broadjam, modernbeats, etc. They handle the "screening" for those companies.
As far as quality, YOUR BEST YOU CAN DO. Also has to be a current sound (sometimes). It has to be professional quality. A measure stick I've always used is if I mix my beat in with say a kanye/jdilla/primo ipod mix, and ppl listen to it, can they tell the diff (good/bad). Not necessarily the style of music, but the audio quality(loudness, mixing, eq, etc).