Is there a way to get rid of a Georgia accent?

I have never been in Georgia, I was born and raised in Florida but my mother came from there.. So, I'm guessing I picked it up from her. Anyways, I hate the way I sound, people at work make fun of me and walk around copying what I say. They treat me like I'm stupid, which is very funny because I'm probably the only one working there that actually finished school. Even when I was younger I was accused of lying when I told people I was from Florida. It's so infuriating. So I'm wondering, are there classes I can take to get rid of this? And how much does something like that normally cost?