Complaint Regarding My Refund With Imile Delivery

I used Imile for a courier delivery in South Africa, and my package was lost. The seller, SHEIN, has already refunded me for the lost items, but I have still not received my delivery fee refund of approximately 820–850. Imile confirmed by email that they would process this refund and asked me to send proof of my bank account details, which I did. It has now been about ten months since the loss of the package, and about eight months since I sent them the requested bank proof. During this period, I have contacted Imile customer service more than fifteen times by email. They apologized for the delay and promised the refund, but despite this, no payment has been made and they have now started ignoring my emails completely. I request that Imile immediately pays the agreed refund of my delivery fee to the bank account details they already received from me and provides a clear written confirmation once this has been done.