Ongoing Poor Service

My NP200 bakkie is under warrenty and was for several services in Upington. Every time I asked them to look into the idle problem of the vehicle. The response was that they do not know what to do. They even arranged that I bring the vehicle there for a specialist to look at it. Still there was no solution. For the last service I took it to De Aar on 15 Nov 2017. I am grateful that they identified the problem and is willing to fix it. But after 2 months, today, they could not start the warranty claim due to system failure. I lodge a complaint about that at the Nissan SA Customer Service (ref ********** 1). They told me they will come back with in 24-48 hours. They did not come back to me in that time. I enjoy this bakkie, but is disappointed that so many different people at different service areas in Nissan are not committed to fix the problem with a Nissan Product.