Roboforex does not withdraw funds....

I traded in roboforex more than half a year, at the end of last year want to withdraw, they refused my request, let me submit a variety of information to prove the source of funds and so on. When I took great pains to get these documents ready, they have been perfunctory, do not give the withdrawal, always looking for a reason to shirk me. And now it has been delayed for several months, it still can not withdraw. My trading account: 37083142. Attachment is chat logs.