Land Rover Centurion is Trash

In December 2019 I took my Range Rover for annual service for the first time to the Centurion branch. Surprisingly, when I asked for a diagnosis for a gearbox fault warning light on the dashboard, the service advisor told me that they are too busy to attend to it and I would have to book the car specifically for that diagnosis at a cost of R1300. On 18 February 2020 I took in the car for a diagnosis. The same service advisor offered a complementary technical inspection of the car as a special that they were running. To replace the battery which is what was causing the warning light sign, it took the whole day reportedly because they have only 1 electrical technician. From the technical inspection, it was discovered that there is a timing chain fault. Booked the car in on 24th Feb to repair the chain. Told it would take 2-3 days to replace. It took 2 weeks with little or no updates on progress and was never offered a courtesy car. There was insistence that once they strip the car and the Warrantor doesn’t pay, I would personally be liable to settle the invoice (R21 000). There were differences in the amount that I was quoted (R21 000) and the one given to the Warrantor (R18 000). At every encounter, the service advisor excellently sells key pouches for cash. To-date (16 March) I do not have a copy of an invoice which they promised to email when I collected my car on 6 March. I tried several times to raise these concerns with the Dealer Principal. Despite superb call answering and messaging system, the Dealer Principal never bothered to return my calls and instead told the service advisor to call me.