NTT Stellenbosch: Where has customer service gone?

NTT Stellenbosch. So my wife bought a car February 2017 at this company. As I know the salesperson I could not foresee the problems we were about to experience. From test driving the "wrong" car to the mags being scratched and a vibration on the steering wheel. I saw this as minor issues which was resolved. So after signing the contract for purchase which had inclusive a few add ons including the CarTrack service monthly payment. So a year has passed and out of the blue we received a sms from CarTrack stating that we are behind and have not paid our fees for the monthly service. My wife made contact with CarTrack trying to get to the root of this mistake. After explaining the situation to the agent, we were duly informed that only NTT can contact them to resolve this matter. We contacted NTT and was referred to Mr Chris Debnam who works in the finance department. Mr Debnam promised to look in to this matter and provide feedback soonest. A month went by and another sms from CarTrack starting to threaten us with legal action. I personally contacted Chris telephonically(05 June 2018) and he assured me that he will follow up and provide feedback. I followed up the query with a email on 07 June 2018. For 3 weeks no feedback or communication was received or made by Chris, imagine my frustration after receiving another sms from CarTrack. My patience had reached breaking point and I felt content to contact Chris's manager due to this pathetic and non-existent customer service. I mailed Mr Theo Bruwer on 28 June 2018 including the email thread for his attention for further action. Theo, has taken it upon himself to not even bother to respond to my email. I stay in Wellington and do not see the need to rock up at NTT Stellenbosch to confront these people, we are the customers and expect to be provided with proper customer service! I am deeply disappointed, angered, frustrated about this absolutely pathetic customer service. I am still a avid Volkswagen fanatic but I will not do business with NTT Stellenbosch anytime soon. I would advise all potential customers to be wary of the promises and smiles and be alert to this type of service. I would appreciate if the head of NTT Motor Group can contact myself or my wife via telephonically or per email, as this one NTT dealership is giving all NTT dealerships a bad name. In our country where the petrol price hikes increases monthly, food prices and basics increases monthly , the one thing you would expect from any business is to treat their customers with decency and respect...yet this is not happening. I am deeply disappointed with the service. You have lost a customer NTT.