Renault Amanzimtoti Useless service

Most pathetic service I have ever received!!! Since the day we have bought our Renault Duster we have had issues, it has been back and forth to Renault just for their incompetent workshop staff to tell us they do not see anything wrong. In January I had broken down with the Duster due to the boost pipe popping off, they came and towed the vehicle away and in the same time I sent a whole long list with the car of all the other issues that there was on the vehicle. Needless to say nothing was done other than them replacing the boost pipe. Still sitting with the issues, on the 17th September my husband broke down with the vehicle and it is still sitting inside of Renaults workshop. We hardly hear from them unless we phone them to find out what is happening and it doesnt even sound like they know themselves what is happening. Long story short, the boost pipes clip went into the engine, and for a car that only has 60 000km on the clock they just want to fix bits and pieces of the engine instead of replacing the engine. I do not want a vehicle with only 60000kms on with a engine that has worked on. The vehicle is still under warranty and of course we paying a lot of money for a vehicle, we expect proper service not the half slap ass service that we are receiving from Renault. after many attempts of trying to get ahold of someone higher than the workshop foreman we got the number for the general manager and without any surprise he basically told us its not his problem and we should speak to the workshop foreman.. Needless to say I do not even want the vehicle back and I will NEVER IN MY LIFE BUY ANY VEHICLE FROM RENAULT AGAIN!!!!!