Wow! I've had a busy day and there's been too much to read it all today. But I'm encouraged by the response from NH Hostas. As someone said, they certainly had good reviews on Dave's Garden (though I'm not so sure there are any hosta growers over there any more. I subscription expires tomorrow and I'm not renewing). They ARE a long way from Utah and it would make a lot of sense to find a supplier closer. This has been a very hot summer and I'm sure safe shipping is a challenge. But for now, take the refund and bonus plant and see what they look like next spring.
BTW, Hallson Gardens (it's still a long way from you - in MI), sends wonderful plants and is worth checking out.
Finally, I agree. Those holes do not look like slug damage to me.