Over charged for 4 credits

I was one of damelin students only left with 4 credits to complete my qualification upon contacting damelin school of insurance the lady assisting Mala Chetty misled me and advised me to pay the full amount as if I. Doing full 30 credits upon confirming with inseta I'm only left with 4 credits to complete and it was not correct for me to be charged full amount ..I have been fighting this battle with Samantha govender who keeps promising I will get my refund from November even the manager does not honour returning my calls I have been sent from pillar to post by damelin I just neeed the refund owed to me