Recently, I ordered a lens, but unfortunately, it has a problem and doesn’t work properly. I sent the seller all the photos taken with the lens, and they accepted that it was defective. After that, I requested a return, but it has been three days now, and the seller has not accepted my request. I keep sending messages, but they are not responding.However, something strange happened today—FedEx came to my house for a collection, but I didn’t receive any email, message, or phone call regarding the return. Also, my return request on eBay is still pending. Could you explain how this process works?