Student or Learner
Let's pretend that someone calls me, but I don't know who it is. He's saying something like "Oh, what's up, dude, blah blah", but I deduce that this person has mixed someting up. He phoned on the wrong number. How can I say "I'm sorry, but it's a wrong number" in natural English?
It's quite a vital situation in Russia.
Please, correct all my mistakes. I should know English perfectly and if you show me my mistakes I will achieve my dream a little bit faster. A lot of thanks.
Not a teacher nor a native speaker.
I am not a teacher.
If I want to know what number he is intending to call, can I say "what number are you calling?"
If I have the slightest suspicion of abuse of the phone system I just hang up. If not I say "You must have the wrong number" and wait for a response.