My boyfriend's immigration attorney doesn't want to return his files to me. When I signed the retainer his case was in charge of an attorney who was later fired by the present one. He hasn't done anything on my bf case and therefore we didn't continue payment. Now we want him to returned to us the file but he says we need to make the full payment in order for him to release them. However the retainer I signed doesn't say that , it says we can terminate the contract at any time. How do I make him retuned the files to me? Do I need to write a termination letter? What should I specify on it? Does he have the right to stay with my bf files? How does this work ?