As I see it, he's not a professional painter so you can't reasonably expect him to behave like one. As a handyman, he's more in the "affable and willing boofhead for hire" category (no offense to boofheads). I think you are obliged to pay his bill, chalk this up to experience, and never make use of him again for anything (partly in the interests of Darwinianism, and mostly because it'll be hard to welcome him into your home).
I look at it this way: if you'd asked him if he can sing, and he'd said "oh yeah I'll give it a go", and you'd paid for studio time and production of a CD, marketing, etc, and then found the CD wasn't a commercial success, you wouldn't then pursue him for your lost thousands. You bought yourself three hours of affable boofheading, which was supplied as specified.
Sorry to say, but you used the wrong tool for the job - handyman where a painter was required. I reckon pay him and move on.
I look at it this way: if you'd asked him if he can sing, and he'd said "oh yeah I'll give it a go", and you'd paid for studio time and production of a CD, marketing, etc, and then found the CD wasn't a commercial success, you wouldn't then pursue him for your lost thousands. You bought yourself three hours of affable boofheading, which was supplied as specified.
Sorry to say, but you used the wrong tool for the job - handyman where a painter was required. I reckon pay him and move on.