The fun part about this is that it's a mess!
Most importantly, no one is going to jail at this point at least.. It's CIVIL law matter. Both of you entered into a contract which takes it out of the criminal justice dug out. The only way that there could be any type of jail time is if there is some sort of contempt of court. (Not doing what the judge said to do) Or some unforseen crime, like the fraud.. Must have proof
Usually, if something was not done to a customers satisfaction, the other party must be given a chance to rectify the problem. There is no set time limit for the rectification, according to most states it falls under the term of reasonable time.. (Who decides what's reasonable?... The Judge)
When the case goes to court the judge may say to party 2 that the work was not done correctly and after an attempt to make right, the job is still crap. Then he'll order that the parts be returned, and money be returned. In most cases, it'll be the money minus labor costs.
The CC company can do the ol' charge back thing but it is usually under the pretense that the goods be returned.
The big winder here is that you can pretty much forget about going to jail, either of you. Unless there is something else.. Like the secondary charge.. Shame, on him...

Big lesson learned, ALWAYS do research on the one to do the work and even if it's a pain.. DRAW up a contract spelling out what is expected from both sides. Stay away from hasty deals as they aren't a good as they seem and neither is the price in the long run.