Forever new - no refunds

I bought a dress at Forever New , it did not fit me well so I returned it. After 3 weeks of the return my money has still not been refunded to me. I reached out on ema to Forever New South Africa's customer service with regards to my refund and after various emails where the customer service department stated that they will get back to me, they have not. Worst of all, now when I try to forward my emails to the customer service department the emails bounce back undeliverable. This is so unacceptable and I will never shop at any Forever New ever again!!! I went in store to try to resolve this issue and get my refund, and all they could do is email my bank card details again to the bank. I am still waiting for my money and find this utterly unacceptable, no other store has taken nearly 3 weeks to process a refund or at least assist you through their customer service email portal. I feel like taking legal action.