Question

麻烦帮忙用英语写个信取消下订单，再美国网站拍错东西了，用英文帮我写个信万分感谢！

Answer 1

Dear xxxx Customer Service:
I erroneously placed a order for xxx, confirmation number xxxx. I would like to cancel the order ASAP. Please help process this request or contact me with further questions. Thanks

Answer 2

First, sorry to bother you.
I accidently ordered the wrong thing, which is... Could you please help me cancel the order.
Look forward to your quick reponse and would appreciate for your help.
Thank you,
XXX