Delayed refund on an order number ***

I ordered shoes and paid for them on the 25 February 2020. they did not have the shoes in stock. Therefore they needed to refund me. This is the order number "***". Since the 26 February i have been communicating with Zando consultants by email and telephone calls, every time i call i speak to a new person who promises me that i will get my R 600 refund within 5 days. i have given them my account details but still i have not been refunded. the Most frustrating thing is that they do not communicate the reason for the delayed refund until i call and every time i need to explain the incident to a new person who promises to help and never does. kindly help me get a refund from Zando. it has been a month now.