Sounds super bizarre. I recently got a call where they were trying to get money from me, claiming that my grandmother was being held for ransom. It was really scary. I ended up submitting a report to the FBI. Not sure if you can submit the case it to them? think you would need to get the company's name the next time he calls. Try and get as many details as possible. A call back number, an email, company name... then file the report.