The only time I have tech support issues is usually on the larger scale of an app or product not being accessible in the first place. The best example of this right now for me is Curiosity Stream. I got in touch with them to let them know that little things in their app, like all video player controls and show lists, didn't work with Voiceover. They told me to restart my phone and make sure I had the latest iOS. Most technicians are pretty friendly and willing to help. This was just a special case and it seems like the app creators are determined not to get any blind customers any time soon.