Not being assisted both at the branch and when calling

There is a payment on my account that I know nothing about. I called Standard Bank to report ***** but I was taken from pillar to post without being assisted, I finally got assisted by a gentleman but he could not assist me with closing my accounts, I then went to loch Logan branch and the ladies there were also not helpful, then they told me to call wherever in order to have my credit card closed but I held on the phone for almost 45 minutes without being answered, I’ve called 4 times already today and have been holding for more than 20 minutes for all my calls without being assisted. I need to close all my accounts with Standard Bank as I fear that whoever has access to my account may put me in debt which I can clearly see Standard Bank will not do anything about. Can I please be assisted ASAP