<human>: So here's the story.  I've worked at Best Buy for the past two years as a seasonal/ocassional.  In other words I come in and work over the summers and during my breaks when I'm home, I'm a college student and I go to school over an hour away.  It's been nice for extra spending money and what not.  So this summer I have a great internship where I'm working 40 hours a week, making double what I make at BB, and have way better working conditions.  I've also been working weekends at BB 8 hours on both Saturday and Sunday, it's quite a bit of work but I really like having money so it is worth it to me.  But after today I think I'm fed up.  I sell computers, which I absolutely love, I enjoy finding great deals for people on stuff they actually need.  I'll spend hours with a customer if they are friendly and willing to learn.  Today I didn't sell a single computer which I don't really care I'm not on commission and I sold other things but I missed out on getting 5 different customers the computers that they wanted because of the incompetence of the system at BB.  On top of working with an incompetent system I'm always over worked my shift is always understaffed.  I can count the number of 15 minute breaks I've had while at best buy using 2 fingers.  The reason my shift is always understaffed is because I sell more and help more customers than anyone else.  In other words they count me as two workers.  I also have proof for this because they recently started tracking sales and out of a 12 person department I make up 17% of the revenue.  I've never received a raise, even after asking 2 separate ocassions, because I'm "seasonal/ocassional and don't qualify for the same raises everyone else does". 

So I've never quit a job before what should I say?  I have to be in to work in 7 hours and I have my complete and total pick of managers to go talk to.  I probably won't get too many responses so late and with so little time but hey I figured somebody would have a great way for me to go out without being a complete douche.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: I can't stand my 2 year old job where I'm under appreciated and I don't really need.  In what way do I leave.