answer: #Person2# calls to find Stefan, but #Person1# tells #Person2# that #Person2# has dialed the wrong number.
documents: #Person1#: Hello!
  #Person2#: Hello, Is that Stefan?
  #Person1#: I'm sorry, but I'm afraid you've dialed the wrong number. There is no Stefan here.
  #Person2#: Really? Are you sure? I called before and he was there.
  #Person1#: Yes. I'm sure. You have the wrong number. I have used this number for more than 20 years.
  #Person2#: That can't be true. I remember the number clearly. Is your number 1199886?
  #Person1#: No, it isn't. It's 1199866. It seems that you have misdialed.
  #Person2#: Oh, I'm sorry I bothered you. I'm really sorry.
  #Person1#: It doesn't matter. It happens to everyone.
  #Person2#: Sorry again for bothering you.
  #Person1#: That's all right.