Fake broker leading people to my buildings

Last night I got a call from one of my tenants that a young man was trying to gain access to the building. The young man in question knew my name and stated that he has made an appointment with me for 8:30pm to see an apartment.
The tenant handed him her phone and I informed him that I don't have any apartments for rent. He stated that he has been contact with me all week long and we last exchanged emails that morning. I asked him what the email address was and he stated that it contained the word "slope". I informed him that I don't have an email like that and that he has been scammed.
When emailing a broker or someone you believe to be the landlord, make sure to get their phone number and make sure to see the apartment before sending any money.