Bad experience with vwsa and vw strydom park,

We bought a brand new Polo R line December 2020 at VW strydom park in Randburg ,after a month there was an engine light and a squeaky noise on the brakes, I brought the car back to them, they told its nothing major on the engine its just oxygen balancing and for the brakes they told me it's dust, they reset the engine light, after 2 months the engine light comes back, they told me I have to change the type of fuel that I'm using, then reset the light again, after 3 months the light comes back, thent they decided to diagnose the car and they found out that the catalytic converter is faulty, OK they replaced it, I was also complaining about the squeaky noise on the brakes they decided to change the brakes, after 3 months the engine light comes back again, and this time around they told me they can't see anything wrong, there's nothing they can do, it's 2022-03-31 I'm still complaining about my brakes and VWSA is doing nothing about that they told me to replace a drum and brake pads at our cost, what a terrible experience with VW, I will never buy a VW car anymore