As some of you may know, I own a Paintless Dent Removal company. I can offer some advice to all that are interested. If you're going to have someone look at your car to possibly fix it, then look for someone that can offer you referrals of dealers they work for or private individuals and confidence that it can be fixed, no question. Doubts they can fix it? Find someone else.
Find out how long they have been doing this and how many cars they've worked on. (Part timers have accumulated time but not cars) I have worked on aluminum cars before and it's no problem if the dent is not too big. Usually a dent the size of a baseball and smaller are fixable to 100%. Creases can be fixed as long as it's not to close to an edge. (taillight , the end of the door or fender) Whoever you decide to use, please focus on the quality not the price. Usually you get what you pay for as I run across that constantly. No two ways about it, quality costs money.
People calling for the low price aren't always concerned about quality. You should do the same. Don't go for the guy that is low balling you or overly anxious to fix your car. The best in the business are busy and not waiting around for someone to call them. Kinda like going to a restaurant with no one there, why aren't they busy? Bad service? Food? You get the idea.
I've been doing this for over 13 years and have fixed upwards of 26,000 cars. I can say that I have seen my share of shoddy work, which cannot be re-fixed unless you take it to a bodyshop.
Focus on quality, and a 100% guarantee(you don't pay unless you are 100% satisfied),and someone who works on the car like it's his own car,as I do and everyone should.
Take care,
John