Mix Telematics ***** tactics

I bought a vehicle in May 2015. The dealership informed me that the requirement of the bank is that a tracking device must be installed before the vehicle can leave the dealership floor. The tracking device was installed and paid for (R4599) in 2015. However, when I called Mix Telematics on 28/09/2018 I was informed that the tracking device was activated on 2015/05/07 and cancelled 'in error' by Mix Telematics on 2015/05/18 (barely 2weeks after it was activated). My question is: to who else is Mix Telematics doing this? How did their books balance for more than 3 years?????? What if something happened to my vehicle because the conditions of the insurance is clear that there must be a tracing device that is in working order!!!! I was promised that the matter will be investigated and I will receive feedback, but till today I have not received ANY feedback. They also say the money will be refunded but to the dealership and then the dealership must refund me, which I don't understand because they failed in the first place to follow their own procedure, because according to my understanding they can only cancel if I give them instruction to cancel, or is it because they already received the money??????? Another question is that if I owe Mix Telematics for more than three years, will I only owe them the initial amount of R4599????