Recently, I was harassed by a strange mobile phone message. How do I know the name of the person who sent me the message? Please give me your advice.

You can go to the business hall to charge the phone bill and ask the waiter if his name is XXX. Then the waiter will say no, it's XXX, so you don't know his name. Then you can tell the waiter that I'll confirm the number later and you can return it, hehe.