Where do you stand?

What would you do in this case? You are contracted by an accounting firm and as a favor to them you provide email redirection, pop accounts, web redirection, and web space to their clients at no charge. Your company is the one who registers the domain name and pays for it. In fact the domain name isnt in the name of the company, but is in fact in the name of your company. All of a sudden the individual stops dealing with the accounting firm. Out of the blue, without any contact you receive a notice showing domain modifications. After perfoming 15 months of free service they dont even bother to call to tell you they are transfering the domain name they paid for.