have you tried their website? i had to change my address with the pa bon and the only way they would change it was to download the form from their website and then mail it in. took about five to ten days on their side. just a suggestion. dont know about maryland.
Go there in person, or send out some emails. Email every somewhat relevant address with a clear, concise message, and you may be lucky enough to get a response. Do NOT under any circumstances complain that nobody has answered the phone. I'm sure they will just ignore you, or send a snarky reply.