Taxes

So I woke up to a new balance on my account almost 6k more! I just filled my taxes about two weeks ago but I would of sworn they would garnish it due to student loans but it was deposited! Now I'm borderline panicking!! Can they now come after my acct? Or will it be audited? How does that work? I don't want to start paying things off if I'll have to turn in the more in a week or two!! 😒