You did the right thing, at least you have tired and that shows why you're a passionately and quality manager irrespective of what those trying to paint you bad thinks. A scam is a scam no matter how small or big the lost of money involved is. I understand where your frustration is coming from as they finally got the last laugh but you should know it's all for the best. Sometimes you let them win especially when the project (in question) aren't worth fighting for as Livecoin exchange isn't showing any sign of change of heart to apologise to the affect customer and working things out with him, who knows how many more affected individuals are out there.  Glad the community worked this one out.