Received a call on my cell looking for my son, PDI Legal Solutions, working with Greenberg and Associates legal firm in California.  They said that a complaint had be filed against my son and needed to followup with a phone call.  I called and the rep would not disclose reason for contacting me (i have a POA for my son).  I was not trusting this call due to the fact that my internet search did not find PDI Legal Solutions and then read SCAM reports on Greenberg and Associated.  Ceased the call and blocked the call.