Unable to withdraw my profit

this broker reject my withdrawal and then deducted my profit with 4686usd in mt4 ,so just refund back my capital with 500usd, so I hope all of the clients better don't take their bonus, they will always use bonus to attract you all before deposit, after when you are gaining profit , they will say you are abusing their bonus, and then deduct whole amount of my profit. Be careful everyone.