my son is disabled

I got a RUDE call from these people asking for my son who is mentally ill and they claimed he has an outstanding debt to a record house from years ago for 35 dollars. I know for a fact that he never had any such thing, these people are jerks and I feel like I'm speaking to someone in the Twilight Zone, especially when I ask for them to send validation, they get mad at me and hang up! I belong to donotccall.gov and I will put their number on the list of complaints. 1-800-620-0371 The government needs to protect citizens against people like this. Why would they want to collect a debt from years ago? They never called our other number which has always been listed because we ran a home business. None of this makes no sense.