TV casting directors call agents when they're looking for actors, since they know agents (legitimate ones -- not the fake agents who recruit wannabes at malls or online) will only send them trained, experienced, professional actors who can show up to jobs knowing exactly what's expected of them. TV production is incredibly expensive, so directors can't afford to provide on-the-job-training. Basically, you'll need a considerable amount of professional acting experience before an agent will consider representing you. But the good news is that you can get that experience in Maryland.
Just about everyone you see on TV and in movies started out in community theater, since that's about the only place an aspiring actor can learn while gaining the professional experience needed to access other opportunities. If you enroll in classes at a local theater and show that you're talented and committed to learning and mastering the craft of acting, you'll be considered for roles in upcoming productions. Once you've appeared in a few of those, you'll have the experience required to shop for an agent who may be able to find you other work. Most stage actors also work in commercials, TV and movies, so your theater peers will be able to recommend legitimate agents when you're ready to take that step.
The dues-paying process is important because it weeds out the wannabes from those who are actually committed to the craft of acting. Just about everyone thinks it would be fun to be on TV or in movies, but very few people would actually devote years to the craft of acting so they'd have even a small chance at TV or movie stardom. That's why it's so easy for fake agents to make fortunes promising shortcuts that don't exist. But legitimate agents NEVER ask for money up front, since they're paid on commission and earn a percentage of what their actors are paid for jobs. Because their livings and reputations are at stake every time they send actors into auditions, they can't afford to represent people who haven't proven they're serious about their craft. If an agent sees that you can recreate the same character night after night on stage without your performances becoming stale and predictable, he'll know you're the real deal.