Volkswagen crew don't treat its customers fairly.

I bought a brand new gold 7 gti 2015 model in March 2015 at Hatfield VW and after 3months of purchase the car started giving me a problem about the coolent level,the warning light for coolent appeared on the screen and i call Roadside assistant and they adviced me to take the car to the dealership in Rustenburg and they told me my car its fine,4 months down the line the same problem occurred and i called vw and they came to tow my car to the dealership but they said they can't find anything wrong with the car and they did a Vast test in my presence and there was no leakage found then they filled up the liquids and i took my car back,3 weeks down the line the same problem occured and this coolent thing it has been going on for 3 years now and i didnt found solution to my car and am paying this car a lot of money but i don't enjoy my ride and am even afraid to drive long distances.This year i got stuck again at Magaliesburg,at the highway with the same problem and i called Vw Sa and they arranged towing people to come take my car to the nearest dealership which was Rooderport Vw and they called and told me that they can't find whats wrong with my car "i asked them where does the water go"if there they can't find a problem and they told me if the problem occur i should take it back to them.Lastly on my way to work the same problem occurred and i called VW Sa and they Adviced me to pour water and drive the car to Rustenburg dealership and when i got there the Service manager was very rude telling me how busy and fully booked he is,he then told me the least he could do is to do a quick vast test and he gave me 1.7 ml of antifreezer to use every morning untill i bring the car on the 4th of april cause i was only booked for that date,i didn't even enjoy my Easter holidays because of this problem and the problem its aggravated ,i can't drive 2 days without that warning lights appearing and when i open the bonnet to check if there is still water i found out there is nothing and i had to refill the liquids so that i can move my car to the safe place and my safety its now compromised but am paying so much for this car and ever since i bought this car i never enjoyed it even a single moment.i need help from hello peter,i can't fight no more.It seems like this car has a factory faults that they can't see,its been forever now.