Sorry to hear that. Not sure there is much you can do. If I were you, I would do two things; never under any circumstances place a market order, and find another broker. Don't take this the wrong way but although it's your fault, that trade seems very shady. This is a stock most brokers will not trade and will probably be delisted very soon, so no legitimate broker would allow a trade to go through @ 500000 percent of current price. Having said that, a broker is not responsible for bad trading decisions. I can't see level 2 on this stock, could you? Or could you at least see an ask price?
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