Definitely check out your pay stub so you can can see the breakdown and make sure you were paid for the full amount. Then, double check how much went to taxes. $500 going to taxes seems like a lot to me when you pocketed $700. My paycheck was like $850 for less hours.

Do you get health insurance through Starbucks?

Have you checked your paystub? It can be checked online at home, you just have to have pop up blockers off!