having a guy at a shop do quite a bit of specialty work on my car including a fair amount of custom fab shit etc. left car at his shop and waited in "line". he got going a while later and was making good progress and his work looked really good. but now he got busy with other stuff and isn't working on it much it doesn't seem, barely even responds. the car is currently undriveable due to it not being done yet. not sure what to do here. its been a few months