Too high commission/transaction fee

We traded yesterday for AUDJPY, when we opened the trade it automatically closes. In less than a second, our capital became negative. the P/L is only around - 6 dollars but the commission is 6,000++. I have around 670 usd before that trade. No broker get that much commission to traders, that is ten times the capital of a trader. Why is it like that? Clearly there is something wrong. I would like to recover my capital. My name is Erick M. Balela with acct no. 8068068 - lost 670 usd. Godbless