LZ,这样的情况我也碰到过啊,不过我是诚实的跟客人说了自己的疏忽,客人也体谅了,一下就是我发给客人的解释:
Dear xx:
Thanks for your order, I he made the proforma invoice for you in the attachment.
I'm sorry that I make a mistake on the quotation of the multicolor line. Just I showed the proforma invoice to my boss, he point out the mistake on the price and criticize me. I hope you can forgive me.Yes, this time you only buy it for sample,so not too much money, maybe next time you will buy more. So I need to say clearly for you. can you accept[收起]