Treat your customers better, communication is the bare minimum

I've been a VW customer over 15 years and this dealership has to have the poorest service levels. It's been a month and I can count in 1 hand the number of times I've been called for an update. I got the car back after 2½ weeks and it broke down after 30km and when I took it back I was given the runaround and even told it's not under warranty. Um? If it broke down in a day, it wasn't fixed! I call repeatedly for updates, I don't even know what is going on with the car. What's the problem, can it be fixed, ETA of the fix, I paid R20k for gearbox issue and I don't even know if the car is still at the dealership, if there's a technician looking at it.