Don’t pay unless you are satisfied with their service

I have asked these guys to fix a garage door motor which was very noisy. They were quick to pick up the motor and to return it and demand payment and left in a hurry. The noice is twice as hard now and I have asked them several times when are they coming to fix it. The answer remains that they will send somebody. The motor is still not fixed and it seems to me after they got their money they will not return to fix the garage door motor.