Someone is trolling me and regularly sends messages through the contact form on my website—how can I protect my website from this?

Starting this year, I’ve been receiving fake inquiries through the form on my website—about one or two a month. The name, company, and email address are correct, but the message wasn’t sent by the people listed. Either they don’t respond to my reply, or they write back saying they never contacted me. This is frustrating because it reflects poorly on my business. What can I do about it? submitted by /u/Weekly-Month-9323 [link] [留言]