Allergy clinic, can't recommend it. The entire app...

Allergy clinic, can't recommend it. The entire appointment was a mess and didn't accomplish anything. Ended up going back to a different allergist. I was also incorrectly billed $600 and can't get it fixed because I've called over and over for months but only one person can apparently take care of it and even though I've left a detailed information with the other staff it still hasn't been addressed and I can't reach the only person that can supposedly handle the issue. That's ridiculous!