A boy is always harassing me with text messages and phone calls. What should I do?

The solution is to find a time to sit down and talk calmly. If it is completely unreasonable, it will only be torn. Don't let others think you are easy to bully, or you will push your luck more and more. After that, don't give him any chance. When you see a text message, delete it directly, and don't communicate. When he understands what you want to say and where you stand, he will give up.