Hi, I purchased my Samsung Galaxy S2X from this company in January 2013, and it is having troubles. It won't turn on all the way, or when I do get it on, it will just shut off. I have a tab balance of $112 remaining on it. How does this work? Can I trade it in?? Get a replacement?? I'm just frustrated because I need my phone to work properly, especially since I am living on my own, away from any family.