The mechanic that worked on my vehicle apparently didn't know what he was doing and installed a part incorrectly, which caused damages to my vehicle . I took my car back multiple times because my AC still was not working properly and they couldn't figure the reason. My AC was blowing warm air & condensation was dripping inside the vehicle. I was really concerned and took it to another mechanic which discovered the part was not installed properly which caused a lot of damage. The cost to repair the vehicle was almost 3 X's the amount. Parts were also missing on the vehicle. I was finally able to get the auto shop to refund the amount I paid him, but he would not reimburse me for the damages and missing parts. What are my options??? Would cashing the refund check affect anything?