Online order not refunded

I know I will not get a response from Makro as they don't seem to respond to complaints. I paid for an online order on 5 February 2025, only to be told afterwards that they are out of stock. The amount I paid included delivery fee of R50. The delivery fee was refunded 8 days later. To date I am still waiting for the balance. But this is what I get in my mailbox, not for the first time

"We are pleased to inform you that your refund has been processed and successfully paid to you. Please note that the refund will reflect in your account/original tender. We appreciate your patience during this process and apologize for any inconvenience caused due to the delay."

It would be interesting to see how much interest they get from keeping people's money in their bank accounts for as long as possible. I am beginning to think that it is a deliberate strategy on their part