I had an account with them some months ago, but their system is like shit. Completely shit. When I was long, the balance showed the opposite, when the market

I had an account with them some months ago, but their system is like shit. Completely shit. When I was long, the balance showed the opposite, when the market was against me my position improved and vice-versa. This had all the bad consequences that one can imagine, as I couldn't close some positions because supposedly there were no funds for that, when in fact, there were. They need a system fix, I really don't trust them.