I really can't address the 'problems' you're having with some AA members, as I don't go to meetings very often. I can only say to take what you need and ignore the rest. As to someone making fun of your accent...
I can only say what I learned in AA (as well as other places) and that is to pray for these people cause they are 'sick' in some way to make fun of someone else.
Is there any other recovery methods you can try? What about counseling, either thru your school or separate from it? I see an addiction counselor once a week and it helps me tremendously. I don't just talk about alcohol, tho I did at first. Now I talk to her about anything bothering me. She can give me insights I hadn't thought of and it's also nice just to have someone to 'vent' to.
I hope you can get back up on the wagon soon, if you haven't already, and hope you can stay sober this time. You have the ability to do that, it's deep within you, you just can't see it right now.
(((hugs)))