Seems like you had the same experience I had when I got them to do my calipers years ago before they got so big into automotive poweder coating.
Taj is the one and only person you want to speak to and give shit to. I'm surprised they dropped the ball on your calipers and didn't make things right. They do actually do good work, but unless your on their ass about things you'll have an experience such as what you just went through. SMH