Amazon Courier Fails to Pick Up Approved Return From Third-Party Seller

I created a return request on Amazon Turkey for the product I bought from the seller abnturk. My return request was approved, but despite the specified pickup time window between 31 August 21:00 and 1 September 20:59, the courier did not come to my address in Istanbul Esenyurt to collect the return. I could not reach any real representative at Amazon customer service regarding this issue and could not find anyone to deal with my problem. No one contacted me, and my product is still waiting at my address even though the return request appears as approved in the system. I request that the courier be urgently directed to my address for pickup, that my return process be completed without any loss of rights, and that my refund be made as soon as possible.