I once had a recruiter cold-call my employer's main line, ask for me by name and falsely claim to the receptionist that they had already been in contact with me

I once had a recruiter cold-call my employer's main line, ask for me by name and falsely claim to the receptionist that they had already been in contact with me about a position. The whole office heard about it within 30 minutes. Not a good way to make friends.