Bad after-sales service

They will tell you after purchasing a car from them that you can come back if you have any problems within 6 months. I had a problem with a water leak and brake light bulb error message that keeps popping up from time to time. Took it back they only managed to fix the leak issue but the brake light bulb error was not fixed as they could not figure out where the problem was. I took it back and tried to ignore the error until my boot suddenly stopped opening. Called the dealership and spoke to my sales guy of which he told me to remove the battery and put it back on to reset hoping the boot will open again but it did not work. I sent an email asking for assistance as this vehicle is still under 6 months warranty offered by the Toyota Centurion but was ignored. Just shows they don't really care about after-sales service.