Disappointed and Frustrated Hyundai Customer

I booked in my car on the 06th October 2020 at Hyundai Alberton and was assisted by the service consultant called Christelle. She promised to call me the following day to give me the quote on the repair work to be done on my car. To my disappointment and frustration, I only got the verbal quote on the 27 October which is more than 3 weeks later. What is really annoying me is that I had to call all the time to follow up and every time she never fulfilled her promises. She promised to email me the quote on 27 October 2020 and to date I am still waiting for it. I escalated the matter to Hyundai Head Office and even tried to speak to the Dealer Principle with no success.