英语投诉信，外贸商务类？

模版如下

dear_______,

i am ______ (自我介绍) .i feel bad to trouble you but i am afraid that i have to make a complaint about_____.

the reason for my dissatisfaction is _______(总体介绍). in the first place,_______(抱怨的第一个方面). in addition, ___________(抱怨的第二个方面). under these circumstances, i find it ________ (感觉)_______(抱怨的方面给你带来的后果).i appreciate it very much if you could _______(提出建议和请求), preferably ______(进一步的要求),and i would like to have this matter settled by ____(设定解决事情最后期限).

thank you for your consideration and i will be looking forward to your reply.

yours sincerely