Apple has plenty of cyber/fraud employees/contractors to track this kind of activity and work with law enforcement as they gather evidence from their user base. The main issue is to gather the evidence and continue to build a case. Have you asked your user base, if anyone has fallen for this and lost time/monies, so they can aggregate the amount? That is usually what moves law enforcement. One phone call won’t matter, but if you track the activity, you can map it over time and start to see patterns.
Apple has good products, but it is your user base that helped to build the company by purchasing product, otherwise, Apple would not exists. Apple should do their part to bring down these rings. A little over a year ago, Brian Krebbs reported the same issue. I would post a link here, but seems Apple doesn’t want me to.
What is Apple doing specifically around vishing scams and how are they educating their user base regarding these. I think they could do more.