Twitter Isn't Safe

This guy named Tim Hastings is using my picture from twitter to put on his web page called tag walk. It is against the law to take some ones picture from of a social site and use it. I want him to take it down and he had a twitter account I tried to contact him and he is not responding, if you go on his lol he hus taking a lot of other people pictures and the are reporting him. I tried to report him to you guys at twitter support and I got no response.. Please ask him to take my picture down its not his to use.