I began to trade on ib 1 year ago. Last Wednesday, I found my market value in TWS decreased about 1500usd suddenly, I stared at TWS everyday and I really care the market value of my account, so I knew my money disappeared under my nose. I called IB service, they told me the number on my statement complies with market value on TWS, I asked the market value on my statement in last Monday and Tuesday, I found that there was an about 1500usd difference between my statement and TWS before last Wednesday, but now it disappeared and no one tell me where is my money. The IB service told me, "Next time" I should take a snapshot of TWS when I find the difference between statement and TWS, What? Next time? Did he mean this will happen again in the future? Are there anyone who have experienced this kind of things on IB before? Or anyone who can tell me what i can do to get my money back?