everything can be put back together except for the crease in the two section. The question is, can you live with the creases or do you want them gone?
If you can live with the creases, then lets procede on, if you want them gone, then you need a new door installed.
You will need a handyman/woman for repairing this. A handyman/woman would be cheaper than an overhead door specialists. The door has to be fixed from the inside. The springs need to be relaxed and the door put back on a stable rail and then work backwards to a smooth running door. YOu may need new wireing and maybe a roller or two.
Should not be a big deal, but before any work is started, those springs must be carefully relaxed. I am assuming that you have two, one oneach side of the door for each door.