Most reputable websites and matching services have procedures in place to remove unauthorized photos as the unfortunate situation you find yourself in is not uncommon. You should start by reviewing the website for information on removing your photo and if nothing is available try contacting the company through their listed contact information.
Your rights to the photo and to how it is used will depend on how the picture was obtained. An attorney can assist you in clearly expressing the rights that are being violated and those that you wish to assert against the company. A letter drafted by an attorney expressing the various copyright and/or privacy implications of leaving the picture on the site may be enough to have it removed.