Transaction not cancelled

Last week I called in around 5pm to cancel a sterkinekor movie ticket that went through twice on my card. After calling and holding for almost 30 mins I was told by the call centre agent that she has effected the reversal. On Wednesday this week when I check my statement I see that the transaction went through twice still. I called in today 17 April 2015 to find out why it was not cancelled call centre agent informs that I need to go to the branch to fill in a form of dispute. This is not only a waste of my airtime, my time and very inefficient. This reminded me why I moved my account to FNB. Standard Bank can't follow clients instructions and transactions always come 5 days later. Not impressed and thinking of settling my credit card and moving as well to FNB if this remains not sorted.