NTT Nissan Newcastle poor customer service

So I have now bought two cars through NTT Nissan Newcastle and referred family members who have bought from there as well. I am only reporting this on Hello Peter because I am fed up of empty promises and honestly dont know what else to do. Right from the first car I bought, a secondhand Ford Fiesta, that was a complete mess up with the registration and apparently had its registration switched at birth and I was driving a vehicle with a license disk given to me that didn't even match the vin number of the vehicle. This was only brought to my attention when I got pulled off by the police. Glad I got rid of that, and now I gave NTT Nissan Newcastle the benefit of the doubt and decided to get a bakkie from them again. A very nice Isuzu KB Dmax 2019 with only 4000km on the clock. This was 3 months ago and I had then since moved to Durban. The vehicle was not washed properly before I took delivery and was told to take it for a full valet and I would get he cash back, so I did that and submitted the slip, guess what? 3 months later and I'm still waiting for that money. I still do not have the spare key for this vehicle due to it being apparently "lost". I have since then been told it has been ordered twice. I have driven back to Newcastle twice to get the key and have it coded to my bakkie and both times the key is somehow not there, after being told it is there. The sales rep then said I must just give my slips and he would pay for my diesel, well guess what? I'm still waiting for that to. I constantly phone everyday asking where my money is as I have Bill's to pay and I just get told that he promises they will pay on a certain day and guess what? Nothing happens. Even just the whole deal with this bakkie and the radio being taken out of the bakkie before I saw it and selling it to me like that. Just would have appreciated a lot more honesty in the deal. And I am very very disappointed with the customer service. I can only ask and ask so many times but now I'm fed up of that because it is not fair that I as the paying customer still end up out of pocket because of their mess ups. I would definitely not reccomend NTT Nissan Newcastle purely cause of the customer service. It is absolutely shocking. I will not be buying another vehicle from them for me or my business. I hope this somehow gets me my money back and hopefully at least some service. Very very disappointed in them.