You may have been "told" or at least, understood them to say financial aid would cover all of your expenses, but if it is not, $1,750 is a minuscule amount to pay.

There is nothing to say that tuition cannot increase, requiring you to pay further.

If the Student Loan Corporation needs to be notified, you should do so, as the communication the school has with them may not be what you wish.

If I'm not mistaken, most student loans require payment within a certain time frame of graduation or leaving school. Unless you continue your education, the only requirement the university has is to notify your lending institution that the the loan, which you have used both last year and this year, is now payable in full. I'm sure this could calculate to thousands of dollars, even for the last school year. It would seem a difficult amount to pay considering your having a difficult time with far less than that.

Best of luck and keep us informed.