2007 MINI Cooper S fuel system problems

I have experienced multiple failures of the fuel pump on my 2007 mini cooper 7. It is now experiencing the early symptoms for a third time. The dealership failed to fix the problem on 4 occasions prior to the fuel pump seizing. They returned the "repaired" vehicle, and the replacement fuel pump was leaking (was overcome by the fumes trying to drive it home from work the same day it was returned). They repaired it a second time, and I had it checked by a second dealer. What are my rights in this situation?

As I approached the street on where I live, the car started to severely shake and jerk , as if power was not going to the engine. I was able to park it on my driveway, but the next morning, the car had to be towed to the dealer because it would not start. When the car arrived at the dealer after being towed in, the car could not be jump-started, even after several attempts. Two weeks prior, I had brought my car in for service because the check engine light came on.