9. I'm sorry you have the wrong extension number.
很遺憾，你的分機號碼沒撥對。
還能這樣說：
Sorry, you have dialed the wrong extension number.
I'm afraid it's a wrong extension number.
應用解析：
the extension of our foreign trade 我國外貿的擴大；
the extension of the school term 學期延長；
a university extension 大學附設部分（夜大，函授班等）
10. Sorry, I remember the wrong number.
對不起，我記錯了電話號碼。
還能這樣說：
Sorry, I confused your number with Sue's.
Sorry, there must be some of confusion numbers.
應用解析：
be confused in mind 心煩意亂；
be (become, get) confused with one's blunder 因做錯事而發慌，不知所措
11. But there's no one here by that name.
這沒你要找的人。
還能這樣說：
I'm sorry there's on one of that name here.
I'm sorry, but I don't know that name.
應用解析：
an assumed name 化名；
the honor of one's name 家族的榮譽；
a man of name 知名人士；
exist in name only 有名無實；
worth of the name 名副其實的
12. Sorry, I confused your number with Sarah's.
對不起，我把你的電話號碼和莎拉的弄混了。
還能這樣說：
I'm sorry I mistake Sarah's number for yours.
Sorry, I have confused the numbers of yours and Sarah's.
諺語：
A number of small streams converge into a vast ocean.
涓涓之流，匯成大海。