First, IMHO the dings represent zero chance of any operational differences.
Next, I doubt that Soma even noticed those things, and the fact that its a couple years old and has been bangin around the warehouse would have had me thinking "I'll probably be getting a bike that has a ding or two". So here's an exercise in mind control. Pretend you've ridden the bike a week on rough courses with gravel. Then think "Huh! I got a couple of minor dings". I think if you think of it this way, you may realize that you got a good bike for half price that has dings so minor that no one else will even notice them.
I'd just ride it and enjoy it. If you can't, then ask about a return. But make a decision one way or t'other quickly. Act, and put the issue behind you.
I hope you end up pleased with whatever path you choose. Good luck.