I used to work at a shop that, for A/C repairs for example, would tell the customer that the compressor needed to be replaced when all that was really needed was a coolant recharge. And, even worse, they would just clean the old compressor (without removing it) and put a new sticker on it. Then, they would just recharge the A/C and charge the customer $800 for the job.
This stuff happens all the time. And dealerships do it too. My old Saab dealer would do free oil changes for me and say that they did a 21 point inspection on everything. Each time they told me that the tires or brakes needed to be replaced when they didn't. Eventually, I pulled the battery cover off to check it myself and found a mountain of corrosion on the battery. The terminal was 80% corroded away. They never once looked at it while doing their inspection. They just parked the car for an hour and then told me that I needed braked and tires. Not sure they ever even did an oil change either. Stealers.
Anyway, I'm not sure what actually happened to you, but good work on taking the photos and inspecting the job. I would take it to a different shop and have them tell you for sure exactly what was done. Have them write up a report and document it. Then, you can go back to the original shop and get a refund if they didn't do what they were supposed to do. I wouldn't let them touch the car again.
This stuff happens all the time. And dealerships do it too. My old Saab dealer would do free oil changes for me and say that they did a 21 point inspection on everything. Each time they told me that the tires or brakes needed to be replaced when they didn't. Eventually, I pulled the battery cover off to check it myself and found a mountain of corrosion on the battery. The terminal was 80% corroded away. They never once looked at it while doing their inspection. They just parked the car for an hour and then told me that I needed braked and tires. Not sure they ever even did an oil change either. Stealers.
Anyway, I'm not sure what actually happened to you, but good work on taking the photos and inspecting the job. I would take it to a different shop and have them tell you for sure exactly what was done. Have them write up a report and document it. Then, you can go back to the original shop and get a refund if they didn't do what they were supposed to do. I wouldn't let them touch the car again.