C387 Uninvited guest

I looked at the phone. I looked at the number. Not familiar. Who was this person? He even called me by name. This was the first time he called me. Do I know this person well or not? Since I can't figure out who the other person is, I have to ask him first.

I have to admit, I didn't have a very good tone when I was talking to people just now. So now, I apologize to someone with a smile on my face