What should I do if I often receive anonymous phone harassment?

I often encounter the problems of the landlord, which is very distressing. My method is, first of all, I have to install an incoming call on my mobile phone, so it is easy to know whether it is harassing the phone, especially in Guangdong and Fujian. Answer quickly if you don't want money, and then scold! Or call 1 10. If the answer is not free, install a Xin Anyi mobile phone software. The website is www.msafe.com.cn. This is the best mobile phone information security firewall I have found so far. I heard that the mobile phone will be in real-name registration system soon. I believe these criminals will not be so rampant then.