Initially, my garage door is not able to close all the way because the technician installed the plates that connects the door and the cable is installed too low so it was lifting the door up. I called the head office and they sent the same technician back.
Second time, the technician had came by and adjusted the bracket, however, the garage door is still not touching the ground. He is telling me that my door is slanted and there is nothing that can be done unless we get a new door. I'm very unhappy with the result. I called the head office and they sent the a more senior technician back.
Third time, Steve had came and adjusted the springs and the motor cable. The door now works perfectly fine, it goes all the way to the ground. He provided me with good advice on how to maintain the door.