Poor Service and Terrible Sale man "Tah Callistus"

I purchased a vehicle through inspectacar Gezina in 2019, I have had one issue after another. Currently im struggling with renewing my license disk. It turned out that the details on the disk were incorrect. I had to go back to the dealership that sold me the vehicle to get help to fix this so i can renew my disk. Sales person who sold me the car Tah Callistus has done nothing but frustrate me, he doesnt answer call no responds to messages. He is the one who made an error and installed the wrong disk on the vehicle but now refuses to fix this. 12 months of back and forth trying to resolve this, i no longer no what to do. Very disappointing and this is not the first issue, i have had with them