Poor service

I've experienced a very bad service with cartrack I've sold my car last year 2024.but before I sell the car I've contacted cartrack to notify them that I'm selling the car the new owner of the car is taking over the cartrack account I requested to do change of ownership and new owner agreed to pay the R350.till today I'm still waiting for the change of ownership.now I'm paying for the cartrack that I don't have I've fleet more than 30 cars.on July 2025 thay have promised me it will be resolved then I had to add cars which thy also quote me different to what Im paying now.ive called Thom they said they will retrieve the call voice recording till today 22 August 2025 I'm still waiting for them.their call centres are selling things that they don't have I'm very disappointed with your service.i regret joining cartrack.everytime when you call them they will say forward the form again and again