Poor security at Capitec leads to R15000 dissapearing from savings account

An amount of R15000 dissapeared from my savings account last week Wednesday,. On the bank statement it showed up as a banking app payment but I made no payment of the sort. In addition to this my I didn't receive an sms notification when this payment was made and had only realised that my available balance was much lower than expected after a client had paid me. What shocks me the most is that hackers/******** can access your banking app information so easily. I just don't understand how poor the security is. I am now being told to wait 2 weeks for an investigation to take place to see what happened to my hard earned money without even a guarantee on a return of my money. I'm going home soon as well and wont be able to follow up on this from when I go home so I need quick feedback. I just cant wait to get my money back so I can move banks