I’m extremely disappointed with the way this matter has been handled

I’m extremely disappointed with the way this matter has been handled. I purchased the microwave on 5 June 2026 and it was delivered on 6 June. It stopped working on 22 August, and I requested a return on 26 August. The courier collected it, my return was approved, and I was told that my refund would be processed on 10 September. However, I still haven’t received my refund, and my status has now changed to “Return Rejected” without any explanation. I have received no email, call, or message explaining what happened. This is very frustrating and unfair, and I need a clear explanation and urgent resolution.