求翻译：我之前买了一个类似钥匙链的东西，也是没有寄到中国但是没有收到，最后还是给我退款了，我想知道这两者有什么不同之处，为什么钥匙链就可以退款，手机就不能退款呢？更何况这个错误是卖家造成的，我多次和卖家联系但是他并没有回复我任何一个邮件，这算服务吗？为什么最终的损失要让我一个人承担，请你们联系卖家和我一个合理的答复，我所承受的是卖家和我各自付一半的责任，退还我一般的费用是什么意思？

Before I bought a key chain-like thing, is not sent to China but not received, finally gave me a refund, I would like to know what is the difference between the two, why key chain to a refund, the phone cannot be refunded? Moreover, this error is caused by the seller, I and contact the seller many times but he did not reply to me any messages, this service? Why final loss to me a person, and I ask you to contact sellers a reasonable answer, I bear is the responsibility of seller and I each pay half, refund my general costs