1、打错电话：
1. I'm sorry I have the wrong number.
抱歉我打错电话了。
2. Is this 02-2718-5398?
这里是02-2718-5398吗？
3. Sorry to have bothered you.
很抱歉打扰你了。
4. I'm sorry. I think I must have dialed the wrong number.
很抱歉。我想我一定是打错电话了。
5. Could I check the number? Is it 2211-334?
我可以核对一下电话号码吗？是不是2211-3344？
解析：
1. 打错电话通常用have the wrong number 表示。
2. 区域号码是 area code。
3.电话号码的念法：02-2211-3224念成：area code zero-two, two-two-one-one-three-two-two-four. 0 可念成 oh 或 zero，22 可念成 two-two 或 double two。
2、要求转分机：
1. May I have extension two-one-one?
可以帮我转分机211吗？
2. Can I have extension two-one-one, please?
能帮我转分机211吗？
3. May I speak to David, extension tow-one-one?
我可以找211分机的大卫吗？
4. Extension two-one-one, please.
请转211。
5. Please connect me with extension two-one-one.
请帮我转分机211。
6. Could you put me through to the personnel department, please?
请帮我接人事部好吗？
解析：
通常句子都是越长越礼貌，太简短会让人有鲁莽的感觉。