[Captain.Remy]

I can tell you're passionate and you love your job and you seem to have everything required to get to the next level but it's only a matter of time. At the end of the day, you're 19, that's what may have cost you the job, but you'll get it, if not a further position than this one and then you will be able to tell them to screw themselves for what just happened. They may have missed a great opportunity to have a great person in their team.
I know it hurts, I can tell from my own experience but you'll get through it.
You always learn more from your fails than your successes.