究竟是谁的责任啊？

国庆放假前发往澳大利亚一单货，是用联邦发的。 放假回来事情就出来了： 客户说她出去旅游了，没有到货。 fedex 送货人吧货放到老外前台，结果货丢了。 澳大利亚联邦说客户跟他们有免签协议。 后来核实一下，没有这个协议。 澳大利亚那边快递跟老外说的是： we would like to apologies on the missing of your shipment above. shipment was delivered without any proper instruction from your end. as per procedure, the shipper in the china has priority to file the claim??from the origin office and fedex china will be in contact with them to advice the claim procedure. you may need to get in touch with them directly for arrangements to organize a replacement or refund. if claim require from your end, authorization letter is require from shipper. please kindly find the authorization letter attach which you could forward it to the sender. regards, 而国内联邦说的是： 只是按照1公斤赔付20美金外加运费。 而实际呢这个货的价值在1500美金左右。 澳大利亚那边赔付客户了400美金。 而客户想要我们重新帮她丢的那批货 可是仔细想想我们工厂把货给快递，而且货是在客户家门前丢的。 我们老板愿意承担一半的货款，而老外只愿意承担$400美金。 究竟该算谁的责任呢？