I have a foreign number to call me today. I want to send a message to ask who he is. How should I ask him in English?

Hello! I am (your name is Andy). This text message is from China. I got a call from you a few days ago. I want to know who you are, please reply to me as soon as possible.

Chinese translation is

Hello! I am (for example, your name is Andy) This message is from China. I got a call from you the other day. I want to know who you are, please reply to me as soon as possible.