FNB student loan application and debit order

Took out a new student loan. It took 2 months to convert the account to a student account, so the interest was as if it was an unsecured personal loan. With the application, I communicated to set the debit order to the end of the month. Strategically the personal loan debit was put through the day before the change was made (25th of October). And still the debit order date is the 25th.