I doubt he will even pay. Just move on!! 
I received payment,https://blockchain.info/ro/tx/c8a0c915169ecbc99a51184266c20f2d66c1088a3aa1abde0c459e8b1a3fcbb8my address is 1GFt3hzDCN9XKFcVLnAqVeibyoKLeVEQNt (Who wants to make a donation is welcome)
http://i.imgur.com/k0GzHWm.png
http://coinmine.io?r=4682