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