RARU cannot keep to their terms

I used to enjoy shopping at RARU but lately their customer service is shocking. My brother and I cancelled an order in March and requested a refund on the 14th of March 2022, the order was meant to be delivered on the 10th of Feb but by March they could not complete the whole order and could not tell me when it would be completed. I sent my banking details and they confirmed receipt. We then asked them on the 23rd how long it would take for the refund to do and they said 15 working days. As of now I have not received my money back and when we followed up with them today they are feeding us a story that it is with the department but will only be processed some time next week. They cannot give me a reason why it has been delayed and they cannot keep to their word for anything. This is shocking