I used to work in Duff's university town. The teacher in the finance department said that it would take some time for them to handle the business of deducting tuition fees. The time may not be certain, but it may take a long time, but you don't have to worry. Generally, the tuition fee will be deducted at the end of the term, and the finance department will also inform the class Committee of the arrears, but it will still be brought to you for you to pay. This is because the arrears notice was sent out, and before it reached you, the finance department had already deducted your money. But none of this matters. Just button it. And before graduation, they will inform you to pay all the tuition fees, library books and so on, and the school will only issue a diploma if the financial department passes.