Once again, a heart stopping problem. The order wouldn't cancel !!! Just says "not cancelled". Tried 3-4 times, then called them - called "Technical Support". The lady said "Just log out and re-log in, it will cancel". I asked her to cancel it for me, she said "For cancellation you have to call the Dealing room". It seems that she couldn't transfer the call herself.
Logged out and re-logged in, and was able to cancel the orders, but it was a heart stopping moment.