Worst aftersales experience ever at Alpine Hillcrest

Hi. I've sent my car in 4 times already for mechanical issues on my vehicle that is only 5 months old with no joy in getting the issue resolved. I walked in the dealership with honest intentions, purchasing my vehicle at its full price, hoping for peace of mind and reliability. Spending over 400k on a vehicle and going through this experience is certainly not up to the standards of Vw. I am now not willing to take the risk on the 5th occasion, only to realize that the issue persists. I travel daily with my family and I cannot afford to drive a vehicle that is not mechanically sound. Please revert with a solution to either replace the vehicle with one that is of similar specs and price or please take the car back as I am still within my rights from a cpa standpoint. Should you not be able to give me the options above, I will escalate to further. I also called in today at 3.30pm asking to speak to a dealer principal for used cars and I was told that he has left for the rest of the afternoon when I asked the receptionist to give me a contact number for the dealer principal because its urgent she refused and when I asked for her name she hungup on me and refused to answer my call 3 times afterwards. These instances really saddens me as this is my 5th Purchase of the VW brand and people who are standing in the frontline damages the VW brand and reputation with their actions. I say these words with a heavy heart having to pay my hard-earned money for this type of service and experience. Hope whoever reads this can treat me the way he/she would like to be treated if they were in my situation.