Vw south Africa

My name is Osborne Kubai ID *** on 2022 September I bought a car at gezina McCarthy 2020 tiguan r line then 2023 June the car gave me problems with gearbox I took it to Hadfield vw cause it was having warranty and I was using the car for business then the gearbox was replaced and I took it for one day it gave me a problem of engine they told me it was many things that is wrong with the engine then they fix it then the car was with them for 6months then they told me the car is fine then I went and took it then the vehicle gave me signs of errors park assist they did not want to fix this year 2024 February the car gave me another problem of engine again I took it back can you please help me to get a new engine or a new car cause I'm busy paying for something that is bothering me and I'm still going to pay for 4 years where will I be with this car I spoke with vwgemeny they don't want to help I even spoke to vw south Africa regard Osborne Kubai