Generally, there are two situations: First, the window attendant food fight miscalculated account, when the wrong card, the waiter recognized; secondly, do you think the other wrong, but it denied (note its work number (or license number of teachers and students ) and to determine when food prices).
 Please put the consumer "IC card" by the cafeteria line managers (or their peers) to the "top of the" inquiry, to be corrected (Note: The Dining Hall window entitled to be refunded in cash) after verification.