Contacting attorneys in other states will do you no good. You live in S.C. now and so only two states plus federal have jurisdiction in this matter. To understand why that is so, if a lawsuit were to be brought it would have to be brought in your home state or the state where the contract was signed. If one were to be brought against you it would most likely be brought in the state where you reside now, not in Arizona. If there are any good consumer attorneys in either state I'd like to know about them.
Consumers attorneys who really do know what they are doing are extremely rare birds indeed. Most of those who are good are
NACA attorneys.
I think your only potential remedy right now is to use a TILA (truth in lending) questionaire and hope to get grounds to sue them in federal court. You can't use FDCPA as a cause of action in federal court because original creditors are not subject to FDCPA.
You might be able to sue the Repo artist under FDCPA because he is liable for his actions under FDCPA since he is acting as a debt collector. That isn't an easy task however because you would probably not be able to prove that he provided you with false and misleading information or other violations.
Remember that whether you plan on going federal as a pro se litigant or hiring a good consumer advocacy attorney you are ging to need evidence and proof of your accusations. You need to get a good digital voice recorder and a decent digital camera. You should carry those with you at all times that it is possible to do so or at least have them handy where you can get to them quickly. Both can be carried in a small belt loop camera case. Carry a couple of extra batteries for both of them with you at all times as well because they both use up batteries even when not turned on. I would recommend an Olympus WS-311M digital voice recorder and an Olympus TP-7 ear phone so you can record calls even on your cell phone without any physical connection to the phone. I would recommend a good camera such as a Sony cybershot or a Cannon. Use the equipment liberally because it is the only way you can gather evidence you might need if you decided to go to court or have to go to court because you were sued.