Poor Communication Service

I received a message with a reference number saying, " Please call ***if you are not currently transacting". Of course this is extremely urgent for me as I am not busy on my bank as I am at work. So I call Nedbank where they transferred me to the ***** department and I have been on hold for over 35 minutes ! I am worried that someone might do transactions on my account and would like to have this matter be treated with urgency but I am not even getting through to anyone. What will now happen if someone takes money out of my account ????