Prospective tenant accusing me of phishing

[Mark Forest]

We have a vacancy that receives several calls a day and we try to respond to all phone calls and emails. Occasionally when I call someone back I receive a recording their voicemail is full.  We received a series of irate texts from an individual who claims that we still have the ad up, but never got back to her/him. This person said they would flag us as "scamers" and that we must be "phishing".  In our Zillow account they left messages that we are after people's Bank info. 

I assume this person has some serious anger issues and I don't want to have anything to do with them. Recently my wife received a message that she/he wants a tour of our property. I say we have the right to disqualify this individual on the basis that they are accusing us of fraud and harassing us. I assume this is a legitamant reason to not consider them any further?