To support Aya statement.
I had an incident last month some broker ran out with my profit.what he did he told me that he can make a profit for within a week and send me his company Bitcoin wallet to transfer my Bitcoin to thier company wallet and I did when the day come to send me my profits he made alot of excuses the next thing he blocked me on WhatsApp messenger.
Yesterday he unblocked me and ask me to send other Bitcoin so I can receive my profit I told him to fuck-off.
So it not easy to trust people now but what must be done by brokers is to link up the wallet of their clients with theirs