PDR (paintless dent repair) is not something that can be picked up overnight.
It takes years to perfect the art of paint-less dent repair. Having local competition is great for business but it’s also very important for you as the customer to ask as many questions as you can (particularly about the technician doing your repair). Ask about experiences within the industry and any associations they may belong to. Good technicians usually will have international experience, a long list of accomplishments and some sort of association with a leading organization within the industry. There are places you can go to access information about the industry and to verify a technician status. A great source of information can be found at NAPDRT.org