Why am i being inconvenienced for your incompetence?

I am not happy with how your call centre team handled my incident, your team promised they will call me within 48hrs as per this sms “Welcome to Cartrack! Ref *** We will contact you within 48h to schedule an appointment for installation.Tel:***.www.cartrack.com” They sent the sms on monday, today is Thursday and still no communication from them. I took an initiative to call them for feedback, i’m now been told the only slot available to put a tracking device on my car is next week? How when i called on monday? As a victim of hijacking i do not feel free driving a car without a tracking device, do they even understand how unsafe it is to drive a car in south africa? Why am i being inconvenienced for their incompetence? I need answers.