Scottrade has yet to credit my account with any shares. At least you could have sold them on Monday. Today after the market closed is the first time they contacted me regarding the "fulfillment" of that order.
That is why I left Schwab and Scottrade, they screwed me in similar situation with over 75k lost, mostly was Scottrade. Schwab are by far better. I am with www.lightspeed.com...they are the best of the best .I pay .32cents per 100 shares !!!and the platform never fail. I did place orders at 50...47....45..43...42...41... on FB before opening but I canceled all and everything is ok.