I didn't answer initially, but called back later and got an automated system stating it is a management company for a charity calling system. It does give you the option to be removed from their call list.
They called my cell phone today and told me they were calling on behalf of President Trump and wanted me to take a survey. I told them I don't take surveys and don't appreciate them calling my cell. Also told them to remove me from their call list, but that will probably never happen - blocked them so they can't call back from the same number.