How to COMPLETELY LEAVE my sorority?

[kikiplus]

Hey, so I joined DPhiE last spring. They were new to campus and I was looking to join a group and it seemed like a great idea at the time. Due to a ton of circumstances, I transferred schools this past Fall and my current school does not have DPhiE. Since then, I've spent a year trying to get money from my chapter that they owe me for t-shirts and such that I never received. Literally a year of emailing them asking for my money back, and I'm really just sick of it. I'd like to completely leave the sorority, it was only a part of my life for one semester and even that one semester was not worth the money I spent on it. I've looked on a few threads for an answer to this and all I've seen is members encouraging the person to think about it and give it another go and so forth. But I'm completely sure in my decision; please, just tell me how to leave. What are the steps I have to take?