Very odd. Recording stated it was seeking users of Xarelto blood thinner drug for a lawsuit. Caller ID CNAM read "Richmond MI". Recording also said I could speak to a representative if I pressed 5 but their system just ignored me however many times I pressed 5. Trolling random numbers for users of a single, particular drug seems unlikely. I'm guessing it was a scam of some sort trying to trick the greedy into thinking they'd hit the jackpot with a potential lawsuit.