This is a probably a social skills question. I have explained a number of times, that I have severe auditory processing disorder. Noise cancellation helps it a lot, and I would want to buy hearing aids with such a function. But there is a problem with how unrecognised APD is. What if they won't want to sell me hearing aids? Help find the right model that has this function? Won't want to adjust it? I have had problems with doctors before, they see "no problem" while I can't understand people speak. Don't even get me started about the ableist behavioural "therapy" for APD. How do I know if I'm dealing with a competent technician?