There is nothing I can do to get you your money back, so there is no need to do that. That platform is also not represented here on the forum, so aside from Wapinter, there is no one else to contact for help or tag. I don't consider a bounty manager creating a thread an official representative. They were paid for handling the bounty and designing the thread, and that's where it ends, unless the bounty manager stated publicly he is an official representative.