Sorry to hear about your problems. I have always said that the exchanges were the weak point for Bitcoin. NEVER, EVER leave your money nor bitcoins in the exchange for any length of time. It just increases your exposure to fraud, theft, and loss. If you buy bitcoins, bring them home to your own wallet and then take that wallet offline!! I did some of my original purchases on Mt.Gox and then got my stuff out of the exchange. I narrowly missed the Mt.Gox fiasco by a few days when they went vapor.
I would not be buying Bitcoin now. It has gone into a serious Elliott Wave down, busting $11,000.