Pep Boys used a makeshift fuel line to repair my fuel return pipe. Gas fumes were leaking into car and now its at high risk of catching fire.

I have been trying to file a claim with PepBoys for over a year due to faulty work, but my case keeps getting passed on to another person and no one ever contacts me. Pep Boys took my gas tank out to clean it, and when replacing it they crushed my fuel line. They offered to fix it, but when they did, they used the wrong fuel line as the piece they broke is no longer being made (1998 Jaguar XJ8 with 32k miles), and sealed it with putty... Gas fumes were leaking into my car and were intoxicating. When I took it back, they denied the smell and told me nothing was wrong with my car. I took it to another pepboys and they saw the shoddy work and recommended I take it to the Jaguar dealership. I haven't been able to drive my car for over a year, as it is at high risk for catching fire and I can't afford the 6k to repair it. I have all the paperwork and pictures to prove their work. Do I have a case?