Ask HN: A stranger on FB earns money making himself fake

It's already 2 weeks, a stranger on Facebook wrote in his info that he is the Project Manager of my company, and collects our costumers from our FB fanpage by messaging them, giving them a false bank account number. He got already 2 of our costumers' money. We reported him, but nothing happens. DOES ANYONE HAVE AN IDEA WHAT CAN WE DO?!