Refusal to refund my credit balance

Damelin owes me R5,054.00 since Dec2023 and to date they have not refunded me. i have been calling and emailing their Head office, which is the Educor Group based in Pinetown , Kwa-Natal. The Manager, Yolandi Breytenbach from the Randburg campus tells me she asked the refund committee to prioritise my refund for the past 2 months. When i call the refunds dept at their Head Office, I am told by Clevan and Natasha (staff of the refunds dept) that this is with their finance team. Firstly for investigation and then for a decision and this is since January 2024. When i ask what investigation, when this is a clear credit owing to me, which was a duplicate payment due to their staff actions, i am told this is procedure. A process that takes close to a year - Impossible. I have asked to speak to the head of the finance team/dept, only to be told that the finance team does not take calls from customers or students. I have been advised to go to the small claims court to try get my money from them. I will ensure to include interest for the months that Damelin has kept my money. It seems like this institute enriches themselves by *****ing students/sponsors money.