我为我们的2次交易给你造成这么多麻烦，感到非常的抱歉。用英文怎么说？

Dear XXX,

Please accept our sincere apology for all the trouble caused to you in the last two orders. I am writing to tell you that:

1. Your second order was put to post on Dec.08.2013. The tracking information shows that it was in ISC CHICAGO IL (USPS) on December 18, 2013 , 3:56 pm. (See the attached screenshot). So we are not able to take it back.

2. We can quite understand that you need it urgently. But we can still remeber asking you when you would like to received your order since we set many shipping options for our clients, some being fast and others taking relativley longer to arrive. Then you placed the order before sending us a reply.

3. I feel terribly sorry for the missing of your first order. I believe you are reasonable enough to undestand that I can not be held responsible for the loss, since it was USPS that charged me and lost the parcel. However, I don't think it fair to transfer the loss to you, so I will refund you for the purchase price and the shipping cost.

4. Many thanks for your trust and repeated purchase. If the second parcel is not delivered in 30 days of posting, I will certainly make you a full refund.

Thank you very much for your custom!

Sorry again for all the trouble we have caused!

Best regards,

XXXX

在邮件中附上第一条里所说的USPS追踪截图（ (See the attached screenshot.）

你是卖家，我可算是个资深买家了，ebay好评已经几百了，因为物品遗失，空包跟卖家沟通的好多次 了，这样的邮件绝对没问题，放心用，采不采纳是次要的，做卖家不容易，大部分交易平台都是倾向于保护买家。

纯手打。累死了。。。。。。赶紧收了吧。
Please accept my apologist for all these inconvinient.
Fisrt, I have already sent you second package at Dec.08.2013 and the lastest INFO shows that you package is now at ISC CHICAGO IL(usps) at Dec.18.2013, 3:56 pc.so I can not retreat it now.
Second, I exactly know that how bad you need this product,but If i was right , I have tried to ask you that when you want to get you package, because there are very many ways for transportation . fast and slow.But I don't have your responed only the order.
Third , I feel very guilty that you lost you 1st package , USPS has been paid ,but they lost it , I know you are a very reasonable person , this is not on me ,however I don't think it will be fair to you as well,so I will return the cost of 1st package to you.
Forth, I really appreciate that you trust me ,if you would not recevie your second package in 30 days , I would return this money as well.
Thank you

My second transaction for our cause so much trouble for you , feel very sorry. 1 First, your second parcel has been sent to me in Dec.08.2013. usps shown above , shows the latest location is wrapped in ISC CHICAGO IL (USPS) date is December 18, 2013, 3:56 pm. So , I can not get the parcel back . 2 I know how much you need this product , but if you remember , I asked you, you want to receive your package at any time, because of the way transportation is very large, some slow , some fast. But you did not answer, and then on the next order. 3 I am very sorry you lost your first package, I paid for usps, but they lost the parcel , I know you are a very sensible person , the responsibility does not lie to me, but I do not think it's right you are fair , so I will first wrap the money back to you . 4 I am very grateful for your trust in me and second purchase if you do not show a second parcel within 30 days of receipt , I will refund the money to you for a second time . I once again for the inconvenience caused you all feel very sorry. Thank you

Because our the second transactions caused you so much trouble, I feel very sorry.

我为我们的2次交易给你造成这么多麻烦,感到非常的抱歉。
I was 2 transaction we have caused so much trouble to you, feel very sorry.