Enve has a pretty good reputation For customer support. If the guy was rude or something, I'd understand getting upset. It seems totally reasonable to me that enve would have different policies for dealers vs customers. That doesn't mean they can treat you bad, but it seems reasonable for them to go through extra steps to evaluate the issue.

You can debate the expertise of the typical bike shop worker, but it's probably higher that the average expertise of the typical end customer.

If you have an issue with your wheels, I'd bet that enve will take care of you.