My fund was manipulated.

I opened an account and traded on AETOS. My $5000 account was floating up and down. At Friday night, due to market event, my position was liquidated and my balance reduced to negative. However, yesterday my account went back to normal. Does such a thing happen to you before?
My two account was $5043 and $4400 before and -$300 and -$600 after the liquidation. Now my first account went back to the balance before, but my second account has only $185.
I didn’t keep any screenshot. Back then my account balances were all negative.