Cash request from a Facebook 'friend' left me £300 out of pocket

I was defrauded by a hacker posing as someone I knew who said he needed help I received a message from a friend on Facebook. It said he was having trouble with his eBay and PayPal account and asked if I could receive some payments for him via PayPal and then send them on to him. It sounded like a perfectly legitimate scenario. I received the money, two transactions of £160 and £140, and sent them on to the bank account he gave me. Then I received another message from him saying his Facebook ac...