Insurance company garage doesn't fix my car properly after accident. What can I do?

My car got into an accident. As per the insurance company's instructions afterward, I put the car in the workshop.

After one week they repaired the car door. But the car door is vibrating and is not fixed properly. I took the car again to the workshop to try to fix it.

But still the car door is vibrating.

What is the solution?

Can you advise me?