尼日利亚客户问题 下集 求指点，现在真的不知道怎么办

dear kevin,
we noted your comments about the term of payment stated in our e-mail. at this juncture, we would like to inform you that the system is entirely like cash and carry system; the only difference therein is that the payment follows the presentation of shipping documents and shall like to give you the full explanation about the system.
the detailed summary of the payment system
the fact of the case is that when we say we obtain allocation of foreign currency, this is purchasing of u.s. dollars from central bank at the rate charged by them and which we he calculated and found to be profitable to us. they should he given us the currency right away immediately they allocated it for us but for the fraudulent people who used to make illegal transfer of money to their foreign bank account with the pretext that they wanted to use the transfer for their imported goods, and as the result of that practice the government was short of the currency. so therefore to prevent such illegal transfer henceforth, the government made a point of duty for all the banks to see the evidence of the goods to purchased with the currency before selling it and that is why we usually obtain the endorsement to the shipping documents from the director of exchange control, central bank of nigeria before taken it to the bank, who we he paid the equivalent amount in local currency, immediately the allocation was obtained, for remittance by telegraphic transfer.
we are given you the full assurance on this system because all other suppliers who he tried it found it to be very good and they are now enjoying it. so it is your own time as well to enjoy the system and we assure you that you will he no cause to regret because we shall be honest and faithful with you since we want our business to last long to the extent that you will be too happy to grant us the agency of your company shortly when you see our good performances.
we shall be looking forward to receiving your advices that our order has been approved and we shall do all the possible action in our business transaction.
best regard,
我现在碰到的这个尼日利亚客户跟我说了好多，邮件写的长篇大论，而且文笔还很好，时不时每天打好几个电话，坚持d/p付款，还想做我们非洲的独家代理，电话里也聊了好几次，很热情，但是这种热情让我浑身不自在。现在陷入抉择困境，希望大家能指点迷津。谢了