A business litigator should serve your purposes.
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It sounds like a small claims case to me. Arbitration may be required. You need to review your contact/warranty with Midas.
Have you presented a claim? Perhaps a letter from an attorney with your documentation would do the trick.
IMO, it will be hard to interest an attorney in this type of litigation as all you have are low figure economic damages.
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If your damages are under $10,000, it is a small claims matter, which is probably the best place for this type of matter. It will get you a quick resolution, and Midas may just pay you once they get served. A conversation with the store manager, combined with a letter from whomever performed the repairs may accomplish the same thing.
Depending on the $$$ value of the case, you might sue in Small Claims Court. But if you anticipate a rigorous defense, a Business Litigation Attorney would probably be best. Look on Avvo.Com under 'Find-A-Lawyer'. Good Luck!
Because this involves poor workmanship and likely a guarantee or warranty on the work, this is a "consumer protection" matter, so, you are able to use consumer protection laws to your benefit. What that translates to is this, you do NOT have to do this alone. You can have a consumer protection law firm like mine handle the matter and get paid by the "bad guy." You may end up solely with your money back for the brake job and related costs like the rent a car without much else but, you should get your atty fees paid for, which is a nice bonus of these types of laws. Feel free to contact my office for a no fee review.