There are 300,000 in the account, I can't withdraw money, I hope people are careful

There are more than 300,000 in the account, and now I can't withdraw a penny. They also say that the account is risky so I cannot withdraw. Then, you should provide me a way to withdraw, but the company just asked me to deposit and deposit. It is so pitty. There is no phone number for the company. Is anyone knows what to do.