pathetic service from renault vaal -10/10

Booked vehicle in for injector fault and cutting out ..booking went well smiles all the way until I received the call that my car will cost me 60.000 to be repaired I am live-rd . I have recently spent over fifty thousand rands on vehicle repairs ranging from turbo motor exhaust injectors and a whole lot more ..ALL parts bought from Renault vaal new. while injectors allone were 16.000 rands .Now I have been around the block but look I'm not stupid ...the vehicle has done just a lil over two thousand kms and now..I must get re quoted for new injectors new turbo new pipes ...even the steel pipes going to the injectors which are not leaking or damaged... even the pipes on top of the injectors to return the fuel to tank or whatever which are brand new as well I really am sickened for this It is to me as if they saw my old megane two and said..right wat shall we quote to chase them away we don't wanna fix ...this we don't KNOW how to DIAGNOSE problems let's chase his ass away with a heavy quote and we won't have to make it known that were actually stupid . don't these people get sent on courses to learn how to fix cars or is it part replacement courses actualy and how to guess