I am so sorry to hear this. I work for others and i appreciate anything i get paid, its all needed. But for this person to out right take advantage of your kindness is wrong, and will no doubt make your weary of hiring others, and thats a sad thing. I can’t believe they did not offer to pay you a percentage of whatever they made off your site per m onth seeing how well they were doing with your spot, on your website? Very greedy, and it will come back at them in the future one way or another.