PATHETIC SERVICE!!!!

Long story short, I took out Cartrack package towards the end of August 2019. The technician by the name Kone came to install the unit, he then told me that the driver airbag light will remain on for few days but will eventually switch itself off. Two week later the later was on, I sent Kone messages after messages about this issue, he then said he will come to have a look at it. It is now 4 weeks since he said that. I then called Cartrack to report this matter on 04 October 2019 and was told that SENIOR TECHNICIAN will give me a call to set up an appointment to have a look at the error, as I type this messages, its 23 October 2019 and still have not heard from Cartrack. I was also told by the agent that assisted me on 04 October 2019 that if the error is not because of the tracking unit, I will be charged R600 for repairs. NOW HOW CAN I BE CHARGED FOR YOUR MISTAKE!!!! Kone who is your technician fiddled with my airbag hence the light is still on TODAY. My car failed road worthiness test due to error, cost me R600. WHY SHOULD I STILL REMAIN YOUR CLIENT I ASK??? I AM A NEW CLIENT AND HAD NOTHING BUT PATHETIC SERVICE FROM CARTRACK! I WANT MY AIR BAG FIXED AS IN YESTERDAY.