This thing happened at the end of April. I invested USoil and profited with their introduction of an agent. When I wanna withdraw my funds, the company said my profit of 300,000 has been deducted by the tax bureau and can not be transferred. But as far as I know, the tax can be deducted from the account balance. However, the company blocked my principal, too. I keep asking them bu there is no satisfying answer.