Landrover sucks

Bought my Land Rover discovery sport two years with a two year warranty. From within the first three months this car has gone back and forth to them for mechanical issue after mechanical issue. Car goes into limp mode whenever there’s a problem.Landrover keeps assuring me that the car is good and fixed. Within days or weeks it’s another problem. Come two years later the warranty will expire and the car is still not right. Who do I connect with to get this matter resolved. Surely this is unacceptable?