Sorry to see that you got such a shit job from a supposed "craftsman". I'd do it over again myself because I know I couldn't live with it looking like that. But that's just me.
And I've worked with many electricians. Some do great work with conduit. I guess it's like everything else, either want to do good work, and you've got an eye for it, or you don't.
Now, even though you've paid them, that doesn't mean there isn't something you can do about it. I'd definitely go online and give them an accurate Yelp review. Maybe with a few pictures too. That's not being mean, just being honest. And maybe saving a few others from that guys shoddy work. Especially after his temper tantrum when he got called out for his workmanship!