My car was serviced by a honda garage, they replaced the callipers and pads on the rear. After collecting it I parked it in its normal spot, on a slight incline in front of my house and came out 5 min later to find my car had rolled into my house, I inspected my car and seen that the hand brake was on but only holds the car in the 2nd last click. I returned to the honda garage and they inspected the hand brake and said it was fine but still altered it anyway. I argued the point but they just say it was fine. Do I have any ground for argument or do I just have to repair it myself.