Nissan South Africa service is terrible

Unbelievable disgraceful horrific service from Nissan. I have a Nissan NP200 which overheated in December 15th 2020.the vehicle was towed to Nissan Ballito. Where it sat there I have two smses on my phone 1st one stated vehicle was booked in for 20th December which was okay so I leave it to the pros . Next thing I know I get another sms that the van is booked for 11th of Jan now it raises eyebrows because for 14 days they did nothing so I called the dealer principal as I was concerned he says he would phone back to find out what's wrong and what happend so I then get a call from the service manager who then gives a brilliant excuse where his technicians had covid and he reassured me that he will be keeping contact and updating me which put me at ease later I then find out that they need to pressure test the head to check warpage but little do they know that I'm an ex technician and I know in level 3 mechanics they teach u how to assess a head without engineers. I asked a simple question which left their service Manger dumb founded which was how hard is it to take a straight edge and feeler gauge to assess the mating surface on the head.... Heres the funny part they say its COMPANY POLICY to send it to engineers. So I leave it then they come back to me and say the head is critically damaged and they lodged a warranty claim to INNOVATION which is another separate warranty company...which is puzzling because the van is a 2019 model and the warranty isn't upheld by Nissan but another company so I wonder if the mighty GTR also has a innovation plan... That's another issue anyways one week goes by and there's no updates from Clinton so I get the dealer principal back in the line and I lose my head because it's one month I'm without a vehicle he investigates and apparently gets back and says that innovation is refusing to pay for the head as they need to prove that the head is out of spec another week goes by while nissan ballito goes back and forth with innovation and they eventually approve the claim... Yay but then the head is on back order so now I'm still without a vehicle since December 15th. Anyways Feb 1st the service manager calls and says they are arranging a loan car so big relief. Few days go by until today which I had to contact the DP and ask what's the story he says he will follow up and give me feedback I get a call 4pm today and he says Nissan SA is now involved they will phone and then the nerve of the call center agent she now says the loan car is outsourced and I have to fork out a R1500 refundable deposit to get the hire car. So Nissan SA picture this the Np200 is freehold and I have to run around like a dog for vehicle after 1 and half month plus you want me pay a refundable deposit as it's Company policy which I know it's a bull **** story as they outsourced the hire car to some rental company and its their policy to charge a deposit. I hope someone important reads this from Nissan SA I will NOT be buying any Nissans in the future you. You guys have treated me like **** and I will be taking this further up the chain