诚心跟各位前辈请教关于付款方式

各位前辈大家好，前段时间跟客户谈了一个单子，50%预付，50%见提单复印件，现在客户要求用他自己货代，客户南洲的，而且货代是南洲的。这样的话我知道风险很大？可能也是自己的不小心，invioce写了FOB上海。其实运费我邮件有提过说是到德班，但是当时他为什么不跟我提起呢，而今天突然说要用自己的非洲那边货代和付运费。我感到很奇怪有些不安。现在客户回复如下，各位帮忙看下： You seem to be more worried about money, I he paid you 50%, Balance will be paid against bill of lading, Please note that I am an honest man and a man of integrity and won't trouble you with money. I import from other people in China and from India. I he been in business for fifteen Years, I cannot trouble you with money.有什么好法可以解决的？虚心挺各位前辈教诲和拍砖。写的有点乱请见谅！！！！！