@Isabel3430
This is confusing. What "private messages"? And do you mean that people are contacting you through the Airbnb message system, requesting to book?
If so, that's a normal part of the process, and highly desirable because it gives you a chance to sense who's booking. And that's critical to prevent unsuitable guests from booking.
If it's by some other means, then how are they getting your contact information? Airbnb hides that from unbooked guests.