I have found, that finances, and family dont mix. If they do not pay you back, just think of all of the things they bought you while raising you. Having a kid is super spendy! I have found, (im 31, but 21 at heart still) that when you hold people accountable for their actions, it doesnt end well. I go through life, being only accountable for "self" (me). Because at the end of the day, I have to live with myself, and I can only be accountable for one person. My in laws promised to pay back my spouses college (Jr college too, for an associates degree). There was 1 oustanding loan for $1800 (that we DID not have when we were 23, so we got a student loan) so at 23, we bought our first home, and before we could close, the loan had to be paid. We called them up (and we are pretty close to them, living wise and relationship wise) and said "Hi, well I got my associates degree, now we have this one outstanding bill for 1800 that we need to pay off, in order to close on our house", their response was not good. Though I and my spouse were in the same room, the year they BOTH (mom and dad) promised to pay it, they said "Sorry for ya". And if it werent for my folks, we never would have been able to close on the house (Thanks mom). I let that keep me pretty pissed off for about 3 years. Looking back now, its petty. I like to be in control, and dictate the outcome of MY LIFE, therefore I try to NEVER get in a situation to where I have to rely on anyone else, for anything. I have a great relationship with my spouse, and a even better relationship with myself, and the inlaws now that I have that attitude. Best of luck to you, but dont you dare let them dictate the outcome of YOUR life!
= )

Thank you for your response! My dad and stepmom got pretty lucky when they got custody of me when i was 12. I got sick about every other year, got great grades throughout school, and didn't cause any problems. In fact, during the last 3 years that i lived with them (year 1 being my senior year), i ended up paying THEM over $11,000.
If they pay me the $4,000 that was taken from my bank account great! If not, then at least I've shown them the proof that they requested