This is going to seem like a strange question but I've never actually dealt with this with any of my clients before and I'm not sure how to go about it.

My client has been paying for a pair of domain names for nearly 2 years now through a Tucows reseller; however, the person listed as the Registrant and Admin contact isn't my client; it was actually the person who originally designed the site. Tucows has been absolutely no help at all in this matter and the reseller of the domain name hasn't been either. My question is: how do I go about getting the domain name back for my client so that he's the legal owner of it and any correspondence related to it is sent to him?