Happened to me earlier in the year. Lost R6k worth of profit from not being able to sell a warrant for alomst 2 hours the one morning. I called them and the fine, upstanding call-centre ladies at SBK...couldn't have cared less. There's stuff-all you can do except fume quietly in your own little corner.
Yip. And if that's not bad enough they persist in spelling cautiuos incorrectly. For ***** sake, they're godamned bankers, you'd think cautious is the ONE word they'd know how to spell. Oh, but thinking of Bears Stearns, maybe not. . .
Never phone the call centre... phone the dealing desk, number provided above... write it down get to know the names of the dealers and that of their children, make friends so when it comes time to trade they know who you are, they won't do you any favours but at least you will be able to trade.