I did a little traveling and my car stalled on me ...

I did a little traveling and my car stalled on me so I had my car towed to Pepboys near Saraland, AL. They informed me that it was my fuel pump so I paid $827.07 to get it fixed, picked my car up a few days later to head back home and my car stalled again. Took it to another Pepboys in Atlanta(where I live) and the car stalled on the technician and I. I was then informed by this technician that I needed to have my car taken to the dealership. Once I got to the dealership they told me the issue was my fuel pump, told me the one that was put on was not outputting enough PSI and that I needed to replace it AGAIN. I called Pepboys and they basically told me I needed to take the part back to Saraland, AL in order to get my money back. Saraland is 5 hours away and this was not an issue I asked for. I now have to go on a road trip to return a part that didn't fix the issue. This has to be worst customer service experience I have ever encountered.