9. I'm sorry you have the wrong extension number.
很遗憾，你的分机号码没拨对。
还能这样说：
Sorry, you have dialed the wrong extension number.
I'm afraid it's a wrong extension number.
应用解析：
the extension of our foreign trade 我国外贸的扩大；
the extension of the school term 学期延长；
a university extension 大学附设部分（夜大，函授班等）
10. Sorry, I remember the wrong number.
对不起，我记错了电话号码。
还能这样说：
Sorry, I confused your number with Sue's.
Sorry, there must be some of confusion numbers.
应用解析：
be confused in mind 心烦意乱；
be (become, get) confused with one's blunder 因做错事而发慌，不知所措
11. But there's no one here by that name.
这没你要找的人。
还能这样说：
I'm sorry there's on one of that name here.
I'm sorry, but I don't know that name.
应用解析：
an assumed name 化名；
the honor of one's name 家族的荣誉；
a man of name 知名人士；
exist in name only 有名无实；
worth of the name 名副其实的
12. Sorry, I confused your number with Sarah's.
对不起，我把你的电话号码和莎拉的弄混了。
还能这样说：
I'm sorry I mistake Sarah's number for yours.
Sorry, I have confused the numbers of yours and Sarah's.
谚语：
A number of small streams converge into a vast ocean.
涓涓之流，汇成大海。