Temu Sent My Order With a Missing Item and Refused to Resolve the Issue

I ordered three items from Temu, but only two were delivered in the package sent via MNG Kargo—the third item was missing. I reported the issue to Temu, but they claimed that all the items had been sent. Despite my repeated attempts to explain the situation and provide evidence, Temu remained uncooperative. In this case, either Temu failed to send the item but refused to admit it, or MNG Kargo somehow lost the product. I even suggested that they verify the weight of the package to confirm whether the missing item had been included, but they ignored my request. While it is Temu's responsibility to resolve the issue, they are not accepting accountability, leaving me at a loss. This experience has made me question the reliability of both Temu and MNG Kargo.