I appreciate the call made by Lungelo Mabuza last night but your security questions are poor

I appreciate the call made by Lungelo Mabuza last night but your security questions are poor. Anyone can know my cellphone number. Instead ask for ID number, full names and cellphone numbers. In most cases you only make one phone call and if not answered you don't have a second layer of security. What if both the phone and the car is taken? It means there won't be anything you will do. Please improve your car watch system