You need to figure out who exactly you are dealing with and who is making these decisions and then find out who you need to be talking to in order to get what

You need to figure out who exactly you are dealing with and who is making these decisions and then find out who you need to be talking to in order to get what you need. The person putting you on the hold is probably a very low level person in the registrars office. Probably start with going to your professors if you have good relationships with them or if not figure out how to speak with someone who understands and has more authority. I don't think lawyers are going to do much for you.