Rear ended, have insurance question

The estimate actually just went up yesterday. They're replacing the bumper now since it's cracked on the inside. We're at over $10k. I thought $9500 was really high too. My advisor says the aluminum is stretched too much to pop it back out. He said if they repaired it, it will always be noticeable. They have the parts in stock now but it's still going to take up to 6 weeks to fix it. I guess they can do whatever they want since they're only 1 of 2 shops in the state that are certified.