I recently left a phone number at the real estate agent, and now I am harassed by phone calls and text messages. What should I do?

You can install a 360 mobile phone guard. According to my experience, it is the most powerful anti-harassment software for mobile phones. I suggest setting the ring-back tone of his number to "empty number" so that it won't bother you again. In addition, your phone number is likely to have been circulated in other intermediary companies, which not only violates your privacy, but also harassing calls and text messages from other intermediaries will continue to come in. If you encounter this situation, I suggest you report this call at 360 Mobile Guardian.