Company has my name my site to theirs indicating i'm associated w/ them what can be done?

a company purchased a domain name for me @ 11.95. I built a site a year ago. i have left the company and they wish not to give me my domain name. i got another and have my site up and running.however, the company has redirected my old domain name to their site. if you hit my old name it goes to their site indicating to people that I am associated with them. They want my domain name so be it but I would wish them to stop misrepresenting themselves. can you tell me there are legal grounds for me have them cease and desist. they may keep the name.