That's why they should do triage. If they can't figure out the problem, at least be able to refer a person to someone they think can. If they're not willing to do that then they're probably more interested in their own practice (can make more money by fumbling around) than helping patients.

I have a great deal of respect for someone who says "I can't help you, but that person over there can" and turns out to be right. I'd gladly try them again with a different problem.