BMW Eastrand

I bought a vehicle from BMW eastrand - Land Rover Evoque - 4 months later my vehicle is not yet registered due to several excuses raised by Hendrik Steyn from BMW Eastrand. The sales rep not only does he not come back with information, but he constantly gives excuses why 4months later - after they received payment for the car from BMW finance and a 25% deposit from myself - they are not willing to register the car. The problem has deemed the vehicle road unworthy which will result in the invalidation of my insurance. The vehicle was also purchased with scratches that the dealer committed to fixing but until now the car is not fixed. The car since purchasing has been to Land Rover twice due to - bad rattling coming from the left side of the car, car battery issues, the boot cannot open using the key and the middle console rattling. Land Rover Nelspruit has had to book the vehicle in for over 3 days to resolve all the said mechanical challenges. On top of this mess - the car has a slow puncture on the right side and the tires are worn out already after doing less than 5,000km - to me, this is very very odd. I do not know where to go for assistance as Hendrik Steyn and all the team at BMW Eastrand are unwilling to help and keep posting me from pillar to post. I am ready to open a legal case as they cannot have a payment for a car that they refuse to transfer ownership. Can I get some help from BMW's principal dealer or anyone who cares about BWW brand?