Answer:
Bursar Office or Admin Office
Explanation:
The Bursar is the person who is assigned the task to manage the financial affairs of the university. So it is better that you visit bursar office so that he can better guide you about the payment process because every university follow different procedures. It is also possible that the bursar's office might not be named as Bursar Office, it may be named as "Admin Office" or "Accounts Office".